HV/MV Equipment

Test & Control Switches

Test & Control Switches

Type SB-1 Switches are rotary, cam-operated devices for the control of electrically operated circuit breakers, small motors, magnetic switches and similar devices. Another important use is for the transfer of current and potential for meters, instruments, and relays. Also, there are many general control applications for which this switch can be used.

The SB-9 master control switches are recommended for applications requiring a large number of repetitive operations with positive positioning on each operation.

The SB-10 switch provides two electrically separate and mechanically independent switches in one device. It utilizes both lateral and rotary contacts all constructed on the same switch.

The SBM switch is a rotary cam-operated device for panel mounting only and for applications where space is at a premium.

Heavy industrial construction
Rotary / Double wiping knife blade design
600 VAC, 30 amp continuous
Available with illuminated nameplates
Coil monitoring and SCADA ready
UL / cUL recognized
Typically used in low & medium voltage switchgear, MCC’s, and relay and control panels as breaker control, voltmeter & ammeter selector, motor control, synchroscope control, and other selector switches

An industry standard for CT & VT isolation for instrument transformer and connected device testing.
Up to 10 poles; Numerous configurations available
Typically mounted on switchgear and relay panels
10 pole test plug available; UL and cUL recognized.
Rated 600 volts and 30 amps continuous

Up to three Series FT switches can be assembled on various size 19” wide panels.
One piece clear cover standard
Panels available in choice of colors and materials
Typically rack mounted in relay panels
UL & cUL recognized

Type PK-2 test blocks are essentially 4-pole and 6-pole jacks, provided with molded Textolite covers that have internal plug contacts, which make a through connection when the cover is in place. The contacts in the blocks are of the line-pressure type and provide positive contact with minimum contact resistance.

The 14 pole PMTB 14 IEC Test Block & plug assembly enables testing personnel to isolate protection relays and other secondary devices from voltage and current sources to allow functional testing of equipment without interruption of service. One common test block and four different test plugs round out the product offering.

The 4-pole SMTB4 IEC Test Block & Plug is a compact alternative to the PMTB 14. Test blocks are available for current (MBB) and voltage (BBM & MBB) circuits and are color coded to prevent inadvertent mixing of test circuits. Mounting provisions include surface, semi-flush, flush and DIN rail. Wiring provisions for clamp type, ring tongue, and quick connect terminations are available. Current type test plugs can be provided with internal shorting links on the incoming CT side. Test plugs and blocks are keyed to prevent incorrect alignment of incoming and outgoing connections.

The EB-25, -26, and -27 terminal blocks are molded one piece design available in 4, 6, and 12 points and are furnished with washer-less head binding screws (#10-32) for circuit wire connections. The blocks are supplied with a black marking strip with white numbers on one side, and white unmarked on the reverse side for circuit identification.