Cranford Controls

IS Tool Reset Call Point

Product Overview

The IS-CP4A-PT and IS-CP4B-PT push button, tool resettable, manual call points are approved for Zones 0, 1, 2, 21 & 22 requiring intrinsically safe equipment for the control of fire and gas alarm systems. Available with and without monitoring resistors all versions are certified to ATEX and IECEx standards.


The push button mechanism is protected by a spring loaded cover therefore the switch requires a two-action activation. The push button is user resettable via the use of the special key supplied with the unit. The IS-CP4 range features enclosures manufactured from corrosion proof, marine grade, copper free LM6 (A413) aluminium which is phosphated and powder coated.


IS-CP4A-PT II 1G Ex ia IIC T6 Ga
II 2D Ex t IIIC T60°C Db
IS-CP4B-PT II 1G Ex ia IIC T4 Ga
II 2D Ex t IIIC T70°C Db
Ambient Ta = -40°C to +55°C
Ingress protection IP66
Housing material Marine grade copper free LM6
Housing finish Phosphated & powder coated finish:
Colour RAL3000 Red (others available
on request)
Cable entries 2 x M20 clearance top and
1 x M20 clearance side.
Back box can be rotated to give
2 x bottom and 1 x side entries.
Stopping plugs 2 x nylon plugs as standard
Brass and stainless steel plugs
Terminals 6 x 4.0mm² cable

Part Numbers

308-053 IS-CP4B-PT tool reset, red