Low Voltage Systems

Switchgear Power Systems low voltage switchboards are available to 600VAC, 4000 Amp in outdoor non-walk-in, indoor dust-tight, and PDC enclosures. Each switchboard is engineered to order, and can be configured to meet a specific footprint and busway or transformer connection.

NEMA 12 Construction
SPS welded-frame, NEMA 12 enclosures provide protection from dust and other airborne contaminants. The accuracy of a switchboard specific arc-flash label is dependent on maintaining the OEM specified circuit breaker opening time, and preventing ingress of airborne contaminants into molded-case circuit breakers is crucial to ensuring their proper operation and opening time. In high airborne particulate environments, heavily ventilated enclosures represent a risk management concern and negatively impact the safety and reliability of the electrical system. SPS NEMA 12 enclosures are an economical solution to improve safety and mitigate electrical system risk.

• Components From All Major OEM’s
• Fully Rated Copper Bus (1000A per square inch)
• Remote Racking Options
• Fix-Mounted and Draw-Out Construction
• Arc Resistant Type 2B Construction Available
• NRTL Labeling
• Continuous Current Ratings of 400A-6000A
• Short-Circuit Ratings up to 100kA
• Seiemic Rating Through IBC Zone 4
• NEMA 1, NEMA 12, and NEMA 3R Enclosures
• Welded Frame Construction

SPS switchboards are built in accordance with all applicable ANSI, IEEE, and NEMA standards. The rigorous SPS quality assurance program is applied at every stage of the project, from engineering through manufacturing and testing.

The SPS paint finish system has been third-party certified to ANSI C57.12.28, and galvanneal steel is standard for outdoor enclosures. Stainless steel enclosures are optional for highly corrosive environments.

Other available options include:
• Seismic rating through IBC Zone 4
• UL 1066 circuit breakers
• Automatic transfer switches
• Utility metering
• C57.12.29 paint system for corrosive environments
• Skid-mounted
• Extended warranty


Arc Resistant
SPS arc resistant switchboards utilize state of the art arc-quenching technology, eliminating the need for plenums, ducts, or venting. Arc-quenching switchgear achieves Type 2B personnel protection, and it retains its arc resistant rating with the doors open and breakers removed. In addition to personnel protection, the resettable arc-quencher protects the switchboard and allows it to return to service in hours rather than days or weeks.

Unlike arc resistant switchgear with plenums and ducts, the arc-quencher protection can be extended to downstream assets such as MCCs, VFDs, and control panels, further mitigating risk to personnel and electrical assets.


Download Low Voltage Switchboard Brochure (1074 KB)

S5 Box


You need to enable user registration from User Manager/Options in the backend of Joomla before this module will activate.