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 Aluminium  
Housing Finish Phosphated & Powder Coated Finish – Anti-Corrosion
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 optional.
Terminals 6 x 4.0mm² cable


Part Numbers

308-053 IS-CP4B-PT Tool Reset, Red