UL Low Voltage Switchgear

Switchgear is our passion, our years of experience in switchboard design and manufacturing allow for unprecedented flexibility in custom design to meet all your electrical distribution needs. We manufacture a complete line of service entrance, fusible distribution, circuit breaker distribution, utility metering for a single or multiple tenants and special application switchboards.

Switchboards can incorporate transfer switches for emergency power if required. These switchboards are listed by Underwriters Laboratories (UL) when applicable and appropriate. EMI specializes in the design and fabrication of additional sections of switchgear to match and connect to the cross bus of existing switchgear, regardless of the manufacturer. Back-to-back, L-shaped and other special lineups can be provided as required.

Standard switchboards are TYPE 1 freestanding enclosures fabricated of code gauge steel and phosphatized, primed and painted as required. Standard construction is rail and panel design with internal structure components and rear cover plates fabricated of G90 galvanized steel unless otherwise specified. Switchboards are built to U/L 891, UL 1558 standards in accordance with NEC and ANSI standards.

Standard dimensions are 42 inches wide x 90 inches high or 38 inches wide x 90 inches high. The standard depth is 24 inches for switchboards through 2000 amps and 30 inches for switchboards from 2001 through 4000 amps. Special dimensions designs are available for space restricted and other special applications. TYPE 3R enclosures are available as required.
Standard bus structure is fabricated of electrical grade tin plated aluminum rated at 750 amps per square inch. Silver plated copper bus rated at 1000 amps per square inch is available when required. Standard bus bracing is 50,000 amp. Bus bracing up to 100,000 amp short circuit rating is available as required.

Solid state zero sequence ground fault protection is available when required. Phase loss, phase reversal and low line voltage protection with shunt trip or capacitive discharge shunt trip are also available. Surge arrestors, surge capacitors and SPD are utilized as specified.

Instrumentation options are available as required.


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