Product Spotlight: Blue Sea Systems m-Series Battery Switch

Many people associate “heavy-duty” with size. But heavy duty doesn’t always mean heavy weight. Waytek stocks the Blue Sea Systems m-series battery switch in a “mini” compact size, with heavy-duty current capacity and harsh environment specifications.

The m-Series Battery Switch from Blue Sea Systems is a great choice for on-road, off-road and boating equipment. Its “mini” size, flexible mounting options, and current-carrying capacity make this battery switch versatile to meet just about any battery switch application for small and medium-size vehicles and equipment. It is very compact, measuring less than 3″ by 3″ (7.6cm X 7.6cm), making it ideal for installations where there are size and space constraints. In spite of its size, its current-carrying capacity exceeds many standard-size switches.

The Blue Sea Systems m-Series Battery Switch is available at Waytek in three models:

The latest innovation in battery switches, Blue Sea Systems’ Dual Circuit Plus™ Battery Switches provide Engine and Start circuit isolation. Dual Circuit Plus™ Battery Switches turn the House and Start batteries on at the same time, but isolates them from each other. Battery isolation protects the Start battery from being discharged from House loads like refrigerators, stereos, and lights, preserving it for starting the engine. Battery isolation also protects sensitive electronics from voltage spikes and sags that may occur during engine starting. In addition, when coupled with an automatic charging relay (ACR) or battery isolator, both battery banks are automatically charged.

Current and Voltage Ratings

The mini size of Blue Sea Systems m-Series battery switches is deceiving. These switches are capable of 300 Amperes continuous rating and 500/450 Amperes intermittent rating. The Single Circuit and Selector models are rated at 48V; the Dual Circuit Plus™ is rated at 32 V. Furthermore, the Dual Circuit Plus™ model is rated at 300 Amperes per circuit so that they have a total current-carrying capacity of 600 Amperes. And, because these switches are UL Listed, you can be confident that they safely handle these high amperages. (See: Technical Brief: UL Marine Listed, Battery Switch Testing)

Case Material

The m-Series Battery Switch case is manufactured using two glass-reinforced plastic variations with properties specific to their application in the switch:

  • The front case, knob, snap-on rear cover plate, and removable isolator covers are made from glass-reinforced polycarbonate, a highly impact resistant material.
  • The switch back plate to which the terminal studs are connected is polybutylene terephthalate (PBT) polymer. PBT is a high heat-rating material not affected by the heat that can be generated by the terminals when operating with high current.

Terminal Stud and Electrical Contact Material

The m-Series battery switch is manufactured with copper contacts and tin-plated copper terminal studs. The bare copper contacts provide the best conductivity and therefore the least amount of heating. The 3/8″ (M10) tin-plated copper studs provide maximum conductivity and corrosion resistance. The 7/8″ (22.2mm) long stud length accepts multiple-cable terminals.

On the Dual Circuit™ and Selector models, the terminal studs are cold pressed into the copper contacts; On the Single Circuit model, the heads of the studs serve as the electrical contacts. Both techniques provide a very strong mechanical and ideal electrical connection. This technique is better than using a nut to fasten the stud to the bus or backplate-a practice used by most battery switches on the market today. A nut may loosen with vibration or during installation of battery cables. When the one-piece stud is pressed into place, it remains tightly fastened thereby eliminating the risk of overheating and switch failure.

Mounting Options

The m-Series battery switch can be mounted in any one of three convenient ways to meet just about any installation need:

  • Surface mounting

  • Front panel, through hole mounting, this option is self-trimming, for up to 3/4″ (19mm) panel thickness

  • Rear-panel, through-hole mounting, for up to 1/8″ (3.175mm) panel thickness

  • Rear case installed

The rear cover plate can be attached in all of the mounting configurations. The removable rear cover plate and side isolator covers protect terminal studs. Remove only the side isolator cover required for you to make connections.

The knob can be removed when the switch is in the off position to provide lockout for servicing. This prevents power from being turned on while the electrical system is being serviced. The knob is positively retained in other positions.

Additional Features

In addition to its compact size, multiple models, and current-carrying capacity, the m-Series Battery Switch also has additional features that make it a desirable choice for many boating needs:

  • Ignition protected-Safe for installation in on-road and off-road vehicles and equipment
  • Accepts up to 4/0 AWG battery cables



Minneapolis, MN, July 2014, - Waytek, Inc., a leading distributor of electrical wiring supplies, connectors, and relays for the mobile equipment market, is pleased to announce the addition of Blue Sea Systems products to its broad, in-stock offering of Original Equipment Manufacturer (OEM) electrical components.

Blue Sea Systems designs and manufactures AC and DC electrical system equipment engineered to withstand the demanding applications in marine and specialty emergency vehicles, industrial machinery, construction machinery, and agricultural equipment markets. Blue Sea System is an industry leader with a reputation for quality.

“More than 75 percent of Blue Sea Systems products are hand assembled in Bellingham, Wash. and backed with a satisfaction guarantee,” said Jim Keister, marketing manager at Waytek, Inc. “Blue Sea Systems stand behind their products because they’re built to last; they stand behind them for as long as you own them.”

OEM customers and retailers can purchase Blue Sea System’s products on the Waytek website. Bulk pricing is available for large order OEM customers. For retail customers, retail packaging is available and designed to be hung in-store on J-hooks for the most efficient use of space. The Waytek website conveniently provides all the mechanical information and specifications necessary to help customers make an appropriate, informed purchase.

The Waytek website features a broad selection of Blue Sea System’s most popular products. Photos, technical and data sheets, and application guides accompany detailed product descriptions. Waytek also has knowledgeable customer service representatives available to answer product questions at 800-328-2724.
Blue Sea

About Waytek

Since 1970, Waytek has been providing electrical wiring supplies to OEMs in the truck body and trailer, construction machinery and equipment, agricultural equipment, and emergency vehicle markets. Waytek maintains a large inventory of more than 10,000 different electrical supplies. Waytek prides itself on having the “Right Parts, In Stock, to be delivered On Time.” To view the Blue Sea System’s products, visit the Waytek website at

About Blue Sea Systems

Blue Sea Systems was founded in 1992 based on a commitment to create innovative, high-quality marine electrical products to improve the safety, simplicity and reliability of boating. Blue Sea Systems employees are active boaters who apply their passion to designing, developing and building products that enhance the experience of boaters. For specific product information and to learn more about Blue Sea Systems, visit

How to Choose the Right Time Delay Relay


(click here to order your relays)

Time delay relays are designed to control an event based on time. Work trucks, buses, emergency vehicles and other mobile equipment require delayed circuit operation for several applications. The solid state design of time delay relays withstands the electrical environments typically found in on and off-road vehicles and equipment. The key is selecting the right time delay relay for your application.

When designing circuits using time delay relays, you should consider the following questions:

  1. What initiates a time delay relay?
  2. Does the timing start with the application or release of voltage?
  3. When is the output relay energized?

Three industry standard time delay relay functions are available: On-Delay, Off-Delay and One-Shot.

On-delay timer relays are used when one circuit function must activate a time delay after another function. For example, you want to start an air compressor five seconds after the PTO is activated. The circuit that activates the PTO would be connected to the on-delay timer relay’s timer input. The timer’s output would operate the compressor’s start circuit. When the PTO is activated the timer starts. Five seconds later the timer’s output would start the compressor, and would stay on until the timer’s input is removed.

Off-delay timer relays are used when one function must start a second function and the second function must stay on for a time period after the first function is deactivated. For example, a school bus has an egress light that must be started when the door is opened, and must stay on for 10 seconds after the door closes. The door open switch is connected the off-delay timer relay’s timer input and the egress light is connected the timer’s output. When the door is opened the timer’s output is activated, turning on the light. When the door switch indicates the door is closed the timer starts. After 10 seconds the timer’s output is deactivated, turning off the light.

One-shot timer relays are used when one function must start a second function and the second function must stay on for a fixed time period. For example, a rear view mirror heater must only operate for 15 minutes to prevent damage to the mirror. The mirror heater switch is connected to the one-shot timer’s input and the timer’s output operates the mirror heater. When the switch is turned on the timer starts and its output is activated, turning on the mirror heater. After 15 minutes the timer’s output turns off regardless of if the switch is on or off.

For more information on time delay relays, call 800.328.2724.

(click here to order your relays)

Waytek Partners with ITS to Help Reduce Fuel Usage Among Fleet Operators with New E-COPILOT Technology

Minneapolis, MN, June 2014, - Waytek, Inc., a leading distributor of electrical wiring supplies, connectors, and relays for the mobile equipment market, now distributes the E-COPILOT by ITS, a device for automating the reduction of fuel consumption and emissions that can result in fuel savings of 10 percent or more.

The E-COPILOT device is a small box that commonly mounts behind a fleet vehicle’s dash panel. By monitoring a number of data points within the vehicle’s ECMs, the E-COPILOT manages the driver’s access to engine power to optimize fuel economy and performance.

“Companies are currently spending millions of dollars attempting to correct inefficient driver behavior. In an economy that’s working on tight budgets, this task becomes even more critical,” said Jim Keister, marketing manager at Waytek, Inc. “E-COPILOT provides intelligent power management of both horsepower and acceleration that can save fleets 10 percent or more in fuel savings,” added Keister.

Waytek is excited to have this fleet-proven technology in stock and ready to assist fleet managers with their cost savings initiatives. The E-COPILOT installs in less than two hours, meets Department of Transportation safety regulations, reduces maintenance costs, meets or exceeds all government standards, and does not affect manufacturer’s warranty.

In addition to fuel savings, E-COPILOT eliminates aggressive acceleration without sacrificing necessary power. E-COPILOT reduces maintenance costs, fuel costs and decreases premature tire wear.

“As fleet managers look for ways to save money with tightened budgets, the E-COPILOT is a great tool for immediate fuel savings,” said Keister. “With the cost of fuel and the number of hours that fleet vehicles log, this is an easy place to see an immediate impact in cost reduction.”

The E-COPILOT can be installed in new or retrofitted into existing trucks. It requires no maintenance, works with all engine models of class 7 and 8 trucks, requires no permanent modifications to the vehicle, and the device stays with the vehicle as it’s transferred to the next fleet.

To purchase E-COPILOT or to learn more, visit

Waytek E-copilot

About Waytek: Since 1970, Waytek has been providing electrical wiring supplies to OEMs in the truck body & trailer, construction machinery & equipment, agricultural equipment, and emergency vehicle markets. Waytek maintains a large inventory of over 10,000 different electrical supplies. Waytek prides itself on having the “Right Parts, In Stock, to be delivered On Time.” To view the E-COPILOT in Waytek’s product line, go to

About ITS: Intelligent Transportation Solutions provides intelligent automation that is focused on reducing fuel consumption, harmful emissions, maintenance costs and improving safety. ITS is headquartered in Minneapolis, Minn. and has multiple years of experience in business, marketing, and vehicle engineering.

How To Manage Power in Dual Voltage Systems

DC Power Converters

DC Converters Manage Battery Power in Dual Voltage Systems

(click here to order)

When the voltage required to power your motor is much higher than the voltage required to power your auxiliary devices, the electrical system is referred to as dual voltage.  If not properly supported, dual voltage systems can suffer from excessive current overload or rapid battery discharge, which significantly reduces the life of batteries. DC to DC Converters take high voltage power from battery packs and provide regulated and clean 12 volt output power for standard auxiliary devices and accessories.

A very common instance of dual voltage systems is electric utility vehicles and mobile equipment.  They are made with 48 volt or higher traction packs in order to power the motor, however, their auxiliary systems, like head lights, radios, communication accessories, computers, wipers and tailgates only require 12 volt power. The 48 volt motor power needs to be converted down to 12 volt power in order to supply the accessories safely. DC to DC converters provide steady energy for 12 volt accessories from battery systems where nominal voltage is much higher and make the output electrically isolated from the input.

DC Converters are designed to withstand reverse battery, over-temperature, over-current, and short circuiting without damage to the unit.They also offer protection from under-voltage and over-voltage on the input. If the input is too high or too low, the converter will shut off to protect itself. Under-voltage protection incorporates a delay so that momentary battery sags do not turn off the converter, and the operating temperature is constantly monitored. If the unit becomes too hot, it will fold back to protect itself. The converter uses current-mode control topology. This topology allows for cycle-by-cycle current limiting during short circuits or overloads. Converters are small, light, silent, and have no moving parts to wear-out, making them very low maintenance.

(click here to order)

Electrical Terminal Blocks: Convenient, Space Saving Solution for Connecting Several Wires

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Electrical terminal blocks provide a convenient way to connect individual electrical wires. Also known as terminal boards or terminal strips, terminal blocks are available in several electrical terminal configurations. The following terminal blocks offer different advantages depending upon your needs.

Double row termterminal blockinal blocks are used for general purpose electronic or electrical work. They help eliminate splicing and can conserve panel space when used to construct high density circuitry. The exact dimensions of the terminal block will vary depending on the number of positions, amps, and voltage. Designed in numerous combinations of amp and volt configurations, ours are available in 20, 30, & 75 amp models with 150, 300, or 600 volt styles and can offer anywhere from 2 to 12 positions.

Single-Row Terminal Strip

Our standard single row terminal strips are rated up to 600 volts and available in 20, 27, or 45 amp models. They can withstand temperatures ranging from 185° to 86° Fahrenheit (or 85° to 30° Celsius). Sold with and without a wire guard, typical wire range will vary and can be anywhere from 10-20 depending on the model you choose.

7-Terminal Junction BoxOur 7-Terminal Junction Box is a stud-type junction block that provides a convenient way to connect wires between trailer and towing vehicles. It has a black ABS Plastic cover and base includes five open rubber grommets, five closed rubber grommets, and #10/32 threaded studs that are spaced ¾ “ apart. Though equipped with barriers to prevent shorting and mounting hardware, nuts and washers are not included. Its glass-filled nylon construction enables it to withstand a maximum temperature of 200° Fahrenheit (or 105° Celsius).

Whether you want to conserve panel space, customize your terminal block, or connect wires between two vehicles, there is a block that will offer the ideal solution for your electrical terminal needs.

(click here to order)

Heavy Duty Welding Cable Alternative to Battery Cable


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Welding cable was originally designed and intended for connecting welding equipment and grounds. It is a high voltage cable built for flexibility so the welder doesn’t have to drag a heavy, stiff cable while working. The transportation, vehicle and heavy equipment industries have recognized the benefits of welding cable’s high flexibility, high voltage, and high heat capabilities and are using it as an alternative to battery cable.

Vehicle and equipment manufacturers are designing with space, weight and fuel savings in mind. Compartments and components are getting smaller and lighter. Welding cable is very easy to work with in small spaces because it is constructed with highly flexible Class K stranding of SAE compliant 30 Ga. copper conductors, and high grade RoHS compliant EPDM insulation. Its extreme flexibility allows tighter diameter bends, so you are able to do more with less cable, making it a cost effective choice. Welding cable offers a more efficient and cost effective method for routing wires. The EPDM jacket resists cuts, tears, abrasion, grease, oil, water and flame for optimal durability. Welding cable withstands the extreme temperatures up to 105°C and remains flexible in -50°C. Capable of high-power applications up to 600 volts.

(click here to order)


What to do When Deutsch Connectors are Difficult to Source?

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Deutsch connectors are in high demand and can be difficult to source due to manufacturer lead times. You see Deutsch connectors everywhere on trucks, construction equipment, Ag equipment, almost any piece of mobile equipment. However, you can’t afford to slow your equipment production to wait for a connector lead time.  Waytek has partnered with Amphenol, Delphi and Molex to make Deutsch compatible connectors in stock, ready to ship as soon as your order is placed. Amphenol, Delphi and Molex have spent countless hours testing and perfecting the Deutsch compatible connector lines to make them a reliable replacement.

Deutsch Compatible Connector

Deutsch Compatible Connector Lines: Amphenol ATP, Amphenol AT, Delphi HES, Molex XRC.

Deutsch DT Compatible – Amphenol AT Connectors: A high performance, cost effective system with wedge locks, durable thermoplastic housings and nickel plated contacts to ensure reliable electrical connections, and withstand harsh environments.

Deutsch HDP Compatible – Molex XRC Connectors: Extra rugged circular connectors are IP67 sealed for protection against dust and water. Their reverse terminal genders allow for custom polarization, and the housing construction with a collar offers easy gripping and efficient installation for decreased labor time and costs.

Deutsch HD Compatible – Amphenol AHD Connectors: Offered in either a smooth Diagnostic Grade housing for non-sealed controlled applications, or Military Style housing with a silicone elastomer seal and threaded constructions for protection against environmental ingress.

Deutsch HDP Compatible – Delphi HES Connectors: Harsh environment series connectors with a rugged construction and IP67 rating. They provide a high current capability, improved sealing, and higher terminal retention with significant cost advantage compared to standard pin-and-sleeve systems.

(click here to order)

How to Protect Electrical Connections from Corrosion, Pull-out and High Repair Costs

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Reducing recurring electrical problems and repair costs is always on the minds of fleet owners. Electrical connectors must operate in adverse conditions like extreme heat, extreme cold, vibration, strain, snow, rain, moisture and chemicals. These conditions cause electrical connector corrosion and wires to pull-out, resulting in equipment downtime and high repair costs.

Electrical-Connector-CorrosionCorrosion damage is estimated at over $23.4 billion in the transportation sector. Wiring and lighting is the most frequent corrosion problem in maintaining fleets. These issues often stem from faulty electrical connections. Equipment downtime often results in hundreds to thousands of dollars in violations, repair costs and lost opportunities.

Heat-shrink-electrical-connectorsUsing a high quality sealed electrical connector can protect against moisture and contaminant causing corrosion. The simplest way to prevent corrosion damage is to use heat shrink terminals and electrical wire connectors in place of non-insulated, vinyl or nylon insulated options. Heat shrink electrical connectors are constructed with adhesive lined polyolefin heat shrink tubing to seal-out moisture. Their initial cost is a little higher than non-insulated, nylon or vinyl electrical connectors, but they offer strong environmental protection, easy installation and durability, making them an extremely valuable selection.

(click here to order)

New Online Quick Order Tool

Waytekwire Quick OrderThe online quick order tool was created for the busy purchasing and engineering professionals. It allows you to quickly enter purchase orders, or a list of items you want to order, by entering quantities and stock numbers into an online form. The quick order tool is located in the top right corner of the home page at There are 5 line item entries on the home page form, but if you need more, simply click the “Add to cart button” for a larger quick order form with 20 line item entries.

How to use the Quick Order Tool

Quick-Order-Tool1. Type the quantity and part numbers you need to order into the fields provided. If you have more than 5 line items to enter, before entering any information in the fields, click the “Add to Cart” button for a larger quick order form with 20 line items

2. Once you’ve finished adding your items, Click the “Add to Cart” or “Add to Order” button.

Quick-Order-Tool23. Review your order, then click the “Add to Current Order” button.

4. After clicking the “Add to Current Order” button, you will see your shopping cart in the upper right hand corner of your screen. Click on the shopping cart icon.

Quick Order Tool5. Review your cart. You can make changes to quantities, line items and more. If everything looks good, click the “Proceed with Checkout” button.

You will be directed to login to your account or register for an account if you don’t already have one. Registering is a simple and secure process. It takes about 1 minute to complete, and once registered, you will be able to track your order status and history, save favorite items into lists and view customized account information.

Quick-Order-Checkout6. After logging-in or registering for an account, you can whiz through the check-out process. Upon placing your order, you will receive an order confirmation email.

If you further questions on how to use the quick order tool, or any other questions, comments or suggestions about, email us or call 800.328.2724.


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