Northwest Signal Supply has been providing fully wired NEMA cabinets for nearly a decade. We have a trained staff on board to service the particular design and fabrication needs of customers in a manner that meets the highest quality standards in the industry. We custom build cabinets to our customer’s exact specifications.

When a customer does not have specifications finalized, we work with them to make sure they get exactly what they need.

Our cabinets are manufactured to U.L. 50 Standards and certified by an independent testing organization. NWS manufacture a complete range of NEMA standard sizes, (G, M, K, & P) a variety of standard Type 170 cabinets (332, 334, 336, 337), as well as terminal cabinets, flasher cabinets, and custom sizes.

NWS manufactures cabinets from Marine Grade Aluminum and Stainless Steel and can provide these cabinets unfinished, painted or powder-coated.

Northwest Signal Supply provides fully wired NEMA cabinets. The company has a trained staff to service the particular design and fabrication needs of customers in a manner that meets the highest quality standards in the industry.

Many providers outsource their supply of backpanels and enclosures, but Northwest Signal Supply wires and manufactures these items on the premises, giving the production managers complete control of the supply of material. This translates directly into optimal customer service.

If the cabinet is for a specific intersection, the cabinet is then set up for that intersection. The conflict monitor card is programmed, load switch jumpers installed, and the controller programmed.

Some customers require an environmental testing of the cabinet and all electronics inside the cabinet. This is performed by slowly raising the temperature in the chamber to 165 degrees F (74 degrees C). The temperature is held for 24 hours and the voltage is increased to 135 VAC at this time and held also for 24 hours. The temperature is then decreased to -30 degrees F (-34 degrees C), this temperature is also held for 24 hours and the voltage is decreased to 95 VAC and held for 24 hours. The cabinet and equipment are then returned to ambient temperature and if there have been zero failures, the cabinet and equipment get documented as passed and the cabinet can be shipped to the customer.