Schmersal SRB 324ST Emergency Stop Safety Relay, 24V ac/dc, Single/Dual-Channel, 5 Safety Contacts

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

BG, USA/CAN

• 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

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

This Schmersal relay is compact and lightweight for improved efficiency and packing capacity in your control panel. Its dimensions are 100 (H) x 45 (W) x 121 (D) mm, and it weighs just 240 g.