Drummond Clamps | G Clamps for Busbar Connections

Drummond Clamps

G Clamps for Busbar Connections

The Drummond G Clamp makes connecting to bus bars straight forward. The clamp-on design eliminates the need to drill bus bars and makes for a much safer, more reliable connection via a standard 4 mm socket. A 4mm shrouded socket is provided in the fluted head of the moulded screw. The connection is suitable for up to 10A continuous use at 600V AC, subject to appropriate rating of the 4mm plug and lead.

The Drummond G-Clamp from Martindale Electric provides a safe, reliable and easy-to-use solution for tapping into bus bars without drilling. Suitable for CAT IV 600 V applications, these lightweight insulated clamps and kits are ideal for power monitoring, measurement and test equipment connections.

• Fused at point of contact
• No need for tools
• Spring loaded contact pin and locking ring
• 4mm socket termination
• Colour coded for phase identification
• Drummond clamps are available in kit format

Thorne & Derrick distribute Substation Earthing Equipment for medium and high voltage electrical systems, typically distributing 6.6kV-11kV-33kV power – we provide competitive prices for MV-HV Substation Earthing Clamps & Cables, including operating poles, from extensive stocks to UK and international destinations.

G Clamps for Busbar Connections

Drummond G-Clamps are clamp-on connectors that attach securely to rigid rectangular bus bars using a spring-loaded contact pin and locking ring, eliminating the need for drilling. Colour-coded options simplify phase identification, and versions with built-in fuses offer added protection at the point of connection. These clamps are ideal for portable measurement and test equipment, temporary diagnostics, or any application requiring safe bus bar insertion via a standard 4 mm socket.

The fluted grip features of the G Clamp enable the clamping screw and locking ring nut to be tightened by hand while wearing appropriate PPE gloves, eliminating the need to use tools in the bus bar chamber.

Ideal for connecting power monitoring and measuring equipment, the new colour coded clamps make phase identification easy. The insulated materials reduce the hazard to the operator and the spring loaded contact pin and locking ring ensure reliable results throughout extended logging periods or for permanent monitoring.

Available individually and in 3 phase connection kit sets including a blue unfused G clamp for the neutral connection. The smaller barrel of the unfused design requires 25mm less clearance in front of the bus bar.

Individual G Clamps

DRUGCLAMP-F0.5-BK (Fused 0.5A Black)
DRUGCLAMP-F0.5-BR (Fused 0.5A Brown)
DRUGCLAMP-F0.5-GY (Fused 0.5A Grey)
DRUGCLAMP-BL (Unfused Blue)

Drummond G Clamp Connection Kit 1

Drummond GCK/F/KIT1 Set of four G Clamps, black, brown, grey fused and blue unfused.

• 3-phase connection kit: black / brown / grey fused and blue unfused
• Easy reliable connection
• No need for tools
• Spring loaded contact pin and locking ring
• 4mm socket termination
• Colour coded for phase identification

Drummond G Clamp Connection Kit 2

Drummond GCK/F/KIT2 Set of four G clamps black, brown, grey fused and blue unfused with 4m heavy duty colour coded CATIV test leads. The leads are terminated with 45 degree 4mm safety plugs at both ends.

• 3-phase connection kit: black / brown / grey fused, blue unfused & heavy duty leads
• Easy reliable connection
• No need for tools
• Spring loaded contact pin and locking ring
• 4mm socket termination
• Colour coded for phase identification

Data Sheets

• Drummond Clamps – G Clamps for Busbar Connections – Instruction Manual
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