Schmersal PROTECT SRB SRB 301ST 1 Auxiliary Contacts Safety Relay 24V ac/dc, Single/Dual-Channel 3 Safety Contacts
- RS Stock No.:
- 741-8653
- Mfr. Part No.:
- SRB301ST-24V-(V.2)
- Manufacturer:
- Schmersal
Bulk discount available
Subtotal (1 unit)*
SGD636.37
(exc. GST)
SGD693.64
(inc. GST)
Add 1 unit to get free delivery
In Stock
- 8 unit(s) ready to ship from another location
- Plus 12 unit(s) shipping from 23 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 - 4 | SGD636.37 |
| 5 + | SGD523.74 |
*price indicative
- RS Stock No.:
- 741-8653
- Mfr. Part No.:
- SRB301ST-24V-(V.2)
- Manufacturer:
- Schmersal
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Schmersal | |
| Supply Voltage | 24V ac/dc | |
| Number of Channels | 1, 2 | |
| Safety Contacts | 3 | |
| Function | Emergency Stop | |
| Auxiliary Contacts | 1 | |
| Reset Method | Automatic | |
| Range | PROTECT SRB | |
| Safety Category ISO 13849-1 | 4 | |
| PL ISO 13849-1 | e | |
| SIL IEC 61508 | 3 | |
| Terminal Type | Screw | |
| Width | 22.5mm | |
| Depth | 121mm | |
| Series | SRB 301ST | |
| Length | 100mm | |
| Performance Level | e | |
| Select all | ||
|---|---|---|
Brand Schmersal | ||
Supply Voltage 24V ac/dc | ||
Number of Channels 1, 2 | ||
Safety Contacts 3 | ||
Function Emergency Stop | ||
Auxiliary Contacts 1 | ||
Reset Method Automatic | ||
Range PROTECT SRB | ||
Safety Category ISO 13849-1 4 | ||
PL ISO 13849-1 e | ||
SIL IEC 61508 3 | ||
Terminal Type Screw | ||
Width 22.5mm | ||
Depth 121mm | ||
Series SRB 301ST | ||
Length 100mm | ||
Performance Level e | ||
- COO (Country of Origin):
- DE
PROTECT SRB301 Series Safety Relays
Introducing the PROTECT SRB301 series of Safety Relays. These are a perfect fit for signal evaluation, specifically the outputs of safety magnetic switches. They function well with such safety applications like Light beams/curtains, Safety mats or Safety switches/interlocks.
Approvals
BG, USA/CAN
Features and benefits
• 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 heat quicker allowing the device to remain cool.
• The material of the contact is a standard AgSn0. It has a positive action and is also self-cleaning.
• Automatic or manual start button input allowing you further control over your device (optional monitored).
• 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.
• 240 of lightweight, durable plastic (glass fibre) reinforced thermoplastic. The structure is also ventilated meaning it dissipates heat quicker allowing the device to remain cool.
• The material of the contact is a standard AgSn0. It has a positive action and is also self-cleaning.
• Automatic or manual start button input allowing you further control over your device (optional monitored).
• 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.
Advantages of the SRB301ST
• A 20 year mission time for this device, giving you the confidence in the quality of the build
• Compact in design allowing you more mounting on your DIN rail or equivalent
• Low power consumption compared to other units on the market
• Compact in design allowing you more mounting on your DIN rail or equivalent
• Low power consumption compared to other units on the market
Technical safety parameters
• EN 954-1 Category - Cat 4
• EN ISO 13849-1 Performance Level – Ple
• EN 62061 SIL Claim - SIL CL 3
• EN ISO 13849-1 Performance Level – Ple
• EN 62061 SIL Claim - SIL CL 3
Does this relay include a labelling area?
Yes, this relay has a labelling area so you can quickly and easily identify it for maintenance or troubleshooting purposes. Standard label signs can be glued or snapped into the space provided on the front of the housing.
Related links
- Schmersal PROTECT SRB SRB 324ST 1 Auxiliary Contacts Safety Relay 24V ac/dc, Single/Dual-Channel 5 Safety Contacts
- Schmersal PROTECT SRB SRB 301MC 1 Auxiliary Contacts Safety Relay 24V ac/dc, Single/Dual-Channel 3 Safety Contacts
- Schmersal PROTECT SRB SRB 301AN 1 Auxiliary Contacts Safety Relay 24V ac/dc, Single/Dual-Channel 4 Safety Contacts
- Schmersal PROTECT SRB SRB 201ZH 2 Auxiliary Contacts Safety Relay 24V dc, Dual-Channel 3 Safety Contacts
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- Schmersal PROTECT SRB SRB 202CA 2 Auxiliary Contacts Safety Relay 24V dc, Dual-Channel 2 Safety Contacts
- Schmersal PROTECT SRB SRB 207AN 1 Auxiliary Contacts Safety Relay 24V dc 2 Safety Contacts
