Schmersal PROTECT SRB402EM-24V Safety-Monitoring Module
The Schmersal PROTECT SRB402EM-24V (Part No. 101170840) is a safety-monitoring extension module designed for expanding the output contacts of upstream safety relay controllers in industrial automation and machine safety systems. Operating on 24 VAC/VDC, it provides 4 safety NO outputs and 2 auxiliary NC contacts, enabling reliable safety signal distribution and contact multiplication. The module features a compact 22.5 mm DIN-rail mount design, complies with EN ISO 13849-1, IEC 61508, and IEC 60
BRAND
SCHMERSAL
TYPE
Safety-Monitoring Module / Safety Relay
PART NO.
101170840
MODEL
SRB402EM-24V
Full Technical Specifications ▶
| Parameter | Value / Description |
|---|---|
| BRAND | SCHMERSAL |
| TYPE | Safety-Monitoring Module / Safety Relay |
| PART NO. | 101170840 |
| MODEL | SRB402EM-24V |
| Voltage Rating | 24 VDC / VAC (via clamp A1 / A2) |
| Application | Contact multiplication and expansion for upstream master safety relay controllers |
| IEC | EN ISO 13849-1 / IEC 61508 / IEC 60947-5-1 |
| Internal Switching Layout | 4 NO (Normally Open) safety contacts | 2 NC (Normally Closed) auxiliary signaling paths |
| Current Consumption | Max. 50 mA |
| Safety Switching Capacity | 230 VAC / 6 A (AC-15) | 24 VDC / 6 A (DC-13) |
| Auxiliary Switching Capacity | 24 VDC / 2 A maximum signaling load limits |
| Short-Circuit Protection | Internal line security protected by fuse type T 1 A / 250 V |
| Wiring Cross-Section limits | Conforms to 28-12 AWG solid or stranded copper line parameters |
| Terminal Fastening Force | 5 lb-in |
| Housing Block Material | Glass-fiber reinforced thermoplastic with ventilation slats |
| Mounting Setup Orientation | 35 mm DIN rails |
| Degree of Protection | IP40 upper housing face plate coverage | IP20 finger-safe terminal array |
| Compliance & Approvals | CE, cULus Listed (382E), and CCC |
| Made In | Germany |
| REF NO | 157 |
Request A Free Quote – Get Response in 24 Hours
We will reply with pricing, availability & support details | Your privacy is fully respected
Most quotes sent same day (IST business hours)
Similar & Related Products
Quick Enquiry
Chat with us on WhatsApp!