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Cat. 4 Safety Relay SR4P3A1B24 for emergency stop,safety gate
Cat. 4 Safety Relay SR4P3A1B24 for emergency stop,safety gate
Supplier Info
[China Supplier]
Contact Person : Mr. Qiu Jack
Tel : 86-537-3926517
Fax : 86-537-3926519
Product Detail
Double channel,manual/automatic reset Plug-in terminal 3N/O and 1N/C Short self-test Redundant circuit

1.Basic introduction 

SR series safety relays is a new type of safety relays,beautiful appearance,structure compact,and reach to the best safety by the smallest cost.SR series safety relays is a kind of products designed according to the European design standards,certified by European safety standard CE and has achieved national CCC safety certification,correspond to 2006/42/EC,2004/108/EC,EN ISO 13849-1,EN 60947-4-1,EN 60947-5-1 and so on standards. Safety relays are widely used in safety light curtain,safety door,a sudden stop switch and so on safety and sudden loop, can set double channel operation to make sure security, to prevent accident and stop.

2. SR series's specification

SR has several specification.They are SR4P2A1B22,SR4P2A1B24,SR4P2A1B24P,SR4P2A1B24N,SR4P3A1B24,SR4P2A1B24S,


The SR4P2A1B22 and SR4P2A1B24 are  appropriate for E-stop Switch,Safety Gate.

The SR4P2A1B24P is appropriate for safety light curtain(PNP).

The SR4P2A1B24N is appropriate for safety light curtain(NPN).

The SR4P3A1B24 is  appropriate for E-stop Switch,Safety Gate.

The SR4P2A1B24S is appropriate for two-hands button.

The SR4P2A1Y is appropriate for E-stop Switch,Safety Gate.

The SR2P4A24 is appropriate for external of safety module.

 3.Technology specification

Supply voltage

85-264V AC/DC

Power consumption

3 W

Frequency range

50-60 HZ

Switched capacity(EN60947-5-1)



Output contact


Contact fuse protection

4A T/6A F

Max overall cable resistance input circuit

DC 100ohm

Dual-channel with detection of shorts across contacts

AC 100ohm

Switch-on delay(automatic reset)


Switch-on delay(manual reset)




Max supply interruption before power failure


Shake suitability






Protection housing


Max cable cross section







35mm DIN rail

4. Detail introduction

SR series safety relay controls one set light curtain, is mounted inside the electrical cabinet.

SR series safety relay is directly inserted into 35mm rails of the inside electrical cabinet of press or equipment.

If periphery has strong electromagnetism noise source(for example transducer,high frequency machine and so on),the controller should be far away from them to avoid the interference.

(1)Output various form,widely  application.

(2)The input contacts's short citcuit fault can be detected,safety performance is good.

(3)You can choose manual reset or automatic reset,operation convenience.

(4)It has self monitoring redundancy circuit ,safety performance is good.

(5)It has status indicators,facilitate fault ispection.

(6)It has removable terminals,facilitate installation and connection.

Cat. 4 Safety Relay SR4P3A1B24 for emergency stop,safety gate

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