Schmersal 24 V ac/dc Safety Relay Single or Dual Channel Compatible With Light Beam/Curtain, Safety Switch/Interlock

  • RS Stock No. 741-8666
  • Mfr. Part No. SRB324ST 24V (V.3)
  • Manufacturer Schmersal
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): DE
Product Details

PROTECT SRB324ST - Safety Relays

Introducing the PROTECT SRB324 range from Schmersal, producers of high quality, reliable safety relays that meet several industry safety standards. These general purpose safety relay modules are for the evaluation of switching signals. The PROTECT SRB324 range is universal and can be used with other brands of safety switchgear.

Suitable for signal processing of potential-free outputs, e.g. emergency stop command devices, position switches and solenoid interlocks
Suitable for signal processing of outputs connected to potentials (AOPDs), STOP 0, 2 safety contacts, STOP 1 (adjustable 1 → 30 s)
4 Signalling outputs
Optional: Short-circuit recognition, Manual reset with edge detection in fail-safe circuit, Automatic reset function



Features and benefits:

• A feedback circuit as standard with this product allows the unit to detect any welding of the contact point, which is particularly useful in keeping the relay running instead of shutting down upon contact.
• Snap on DIN rail mounting as standard with this product allowing easy additions & removals, allowing you the flexibility and portability you require.
• 240 of lightweight, durable plastic (glass fibre) reinforced thermoplastic. The structure is also ventilated meaning it dissipates quicker allowing the device to remain cool.
• Automatic or manual start button input allowing you further control over your device (optional monitored).
• The material of the contact is a standard AgSn0. It has a positive action and is also self-cleaning.


• Guard systems
• Emergency stop buttons
• Pull wire emergency stop switches
• Safety light curtains
• Safety sensors

Technical safety parameters

• EN 954-1 Category - Cat 4
• EN ISO 13849-1 Performance Level – Ple
• EN 62061 SIL Claim - SIL CL 3

Attribute Value
Supply Voltage 24 V ac/dc
Number of Channels 1, 2
Function Light Beam/Curtain, Safety Switch/Interlock
Terminal Type Screw
Length 100mm
Depth 121mm
Width 45mm
14 In stock for delivery within 5 working day(s)
Price (ex. GST) Each
$ 1,010.44
(exc. GST)
$ 1,162.01
(inc. GST)
Per unit
1 +
Related Products
Professional range of IDEM VIPER Safety Relays with ...
Professional range of IDEM VIPER Safety Relays with plug or screw terminals. The safety relays incorporate expansion units. The relays can be directly wired to increase the number of safety output contacts. Designed to meet the latest safety standard and ...
The PNOZ X1 series from PILZ is a ...
The PNOZ X1 series from PILZ is a reliable and affordable safety relay that will give you the confidence to run your safety circuits in a safe manner. • Specially designed for two handed control/operation. The P2HZ series will not ...
The UE48 safety relay is suitable for interfacing ...
The UE48 safety relay is suitable for interfacing SICK light curtains and laser scanner products (S3000, C4000 and M4000). Cross circuit on dual channel wired systems. Restart interlock. External device monitoring. Synchronous time monitoring. Manual and automatic reset3 LEDs: supply ...
Emergency stop relay compliant with the EC Directive ...
Emergency stop relay compliant with the EC Directive on machines 98/37/EC1-channel configurationLED status display. Short circuit detection between terminal Y1 and earth. Overall width of 22.5 mm.