Custom 600V Low Voltage Distribution Switchboard – 600A to 5000A Main Breaker, Main Lug or Utility Metering

Product Details

Custom low voltage switchboards designed for commercial and industrial power distribution systems. Available in main breaker, main lug only, utility metering and group-mounted distribution configurations.

The switchboard can be configured for 480V, 600V, 480Y/277V or 600Y/347V three-phase systems. Main breaker arrangements are available from 600A to 4000A, while main lug only configurations are available from 600A to 5000A.

Standard construction includes tin-plated copper bus, 65kA bus bracing and an ANSI-61 grey powder-coated finish. Optional configurations include 100kA bus bracing, a 200% rated neutral, surge protective devices, ground-fault protection, utility metering provisions, busway connections and transformer connections.

Indoor NEMA Type 1 and outdoor NEMA Type 3R enclosures are available. Switchboards may be configured for front or rear accessibility, with top entry, bottom entry, side pull sections or combined top-and-bottom cable entry depending on the selected arrangement.

Available Switchboard Arrangements

• Main breaker switchboard

• Main lug only switchboard

• Hot-sequence utility metering

• Cold-sequence utility metering

• Bussed side-pull section

• Group-mounted distribution section

• Half-height distribution with large feeder

• Free-standing enclosed breaker

• Top, bottom or side cable entry

Main Breaker Options

Main molded-case circuit breakers are available from 600A to 1200A. Air circuit breaker mains are available from 600A to 4000A, with fixed or drawout configurations available within the catalogue ratings.

Available protection functions include:

• LI protection

• LSI protection

• LSIG protection

• Ground-fault protection

• Arc-flash reduction maintenance mode

• Zone selective interlocking

• Energy-limiting maintenance switch

Accessibility and Cable Entry

The switchboard can be configured to suit the available electrical room layout and incoming cable direction.

Available arrangements include:

• Front-accessible construction

• Rear-accessible construction

• Top cable entry

• Bottom cable entry

• Side pull section

• Top-and-bottom cable entry

Final accessibility and cable-entry requirements should be confirmed during the quotation stage to ensure the correct section width, depth and incoming cable space are selected.

Bus and Neutral Options

Available bus and neutral configurations include:

• 65kA standard bus bracing

• Optional 100kA bus bracing

• Standard neutral

• Optional 200% rated neutral

• Three-phase, three-wire configuration without neutral

• Tin-plated copper bus

The required bus bracing should be selected according to the project’s available fault current and system coordination requirements.

Communication and Metering Options

Switchboards can be supplied with metering, monitoring and communication features to support facility operation, energy monitoring and electrical system integration.

Available options include:

• Standard LED trip-unit display

• Colour LCD trip-unit display

• Multi-metering trip unit

• Total harmonic distortion analysis

• Waveform capture

• RS-485 Modbus communication

• Utility metering provisions

• Standard configuration without communication

Utility metering arrangements are available in hot-sequence and cold-sequence configurations.

Breaker Accessories and Control Options

Available breaker and control accessories include:

• Motor operator

• Shunt trip

• Undervoltage release

• Alarm switch

• Auxiliary contacts

• Mechanical interlock

• Phase barriers

• Stored-energy operating mechanism

AC- and DC-rated operating accessories are available depending on the selected breaker and control-voltage requirements.

Additional Switchboard Options

The switchboard may also be configured with:

• Surge protective device

• Ground-fault protection

• Energy-limiting maintenance switch

• Busway connection

• Transformer connection

• Utility metering provisions

• Phase barriers

• Monitoring and communication devices

• Optional 200% neutral

Distribution Breaker Options

Group-mounted molded-case feeder breakers are available from 15A to 1200A. Large feeder arrangements are available up to 2500A, depending on the selected distribution section.

Feeder breaker options may include:

• Fixed or adjustable trip settings

• Alarm and auxiliary contacts

• Shunt trip

• Undervoltage release

• Motor operator

• Mechanical interlock

Standards

• UL 891 switchboard

• CSA C22.2 No. 244

• NEMA PB-2

• UL 489 molded-case circuit breakers

• UL 1066 power circuit breakers, where applicable

Request a Quote

Each switchboard is configured according to the project voltage, main rating, incoming arrangement, available fault current, feeder schedule, metering requirements, accessibility and enclosure type.

For quotation, provide:

• Single-line diagram

• System voltage

• Main amperage

• Main breaker or main lug requirement

• Required interrupting rating or available fault current

• Feeder breaker schedule

• Indoor or outdoor enclosure

• Front- or rear-accessibility requirement

• Top, bottom or side cable entry

• Utility metering requirements

• Protection and communication requirements

• Required delivery date

Submit your project specifications for technical review, lead time and quotation.