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Interlocked Change-Over Contactors 

A range of 'Automatic' & 'Mechanically' interlocked change-over pairs of contactors providing a means of switching a load to a standby supply in the event of a mains failure, preventing simultaneous operation and ensuring safe action.  All types are fully rated for AC1 duty.

Supplied fully wired, ready to install & comply to BS EN 60947-4-1 & BS EN ISO 9002.

Automatic' types listed, incorporate a 'Mains Preference Relay' to select the mains supply when available.  If this feature is not required, replace the prefix 'A' with 'M' .

Horizontal interlocking can be supplied as an alternative to vertical at extra cost (add suffix '+HZL' to standard reference).  Pricing on request.

Add suffix 'E' (Enclosed)  or 'U' (Unenclosed)
 

  
Amps per Pole Double pole Reference Triple pole and neutral  Reference Four pole Reference
Heating Lighting
32 20 A8Y4DP32/20 A8Y4TP32/20 A8Y4FP32/20
100 63 A2W4DP100/63 A2W4TP100/63 A2W4FP100/63
160 125 A2DDP160/125 A2DTP160/125 A2DFP160/125
250 160 A2DDP250/160 A2DTP250/160 A2DFP250/160
315 250 A2DDP315/250 A2DTP315/250 A2DFP315/250
500 400 A2MDP500/400 A2MTP500/400 A2MFP500/400
630 500 A2MNDP630/500 A2MNTP630/500 A2MNFP630/500
800 630 A2NDP800/630 A2NTP800/630 A2NFP800/630
1000 800 A2PDP1000/800 A2PTP1000/800 A2PFP1000/800
1250 800 A2RDP1250/800 A2RTP1250/800 A2RFP1250/800

Orderering Example
 

  • Suitable for commercial, industrial, traction and domestic applications

  • Reliable control in accordance with BS EN 60947-4

  • Quality Assessed to BS EN 9002:1994

  • Reduced operating costs and silent operation by means of a DC magnet system fed from an integral rectifier as standard

  • Heavy duty silver alloy faced contacts giving excellent anti-weld properties and long trouble free life.

  • IP42 protection provided as standard by steel enclosures - higher levels of protection also available on request

  • Complete range available from 10 to 1250 Amps, up to 18 poles, AC or DC loads

  • Factory Fitted Options available on all contactor ranges

  • Fit and Forget : easy to install and maintain with replacement parts readily available