Position Switches & Sensors


Product Code: 101190684

The Schmersal SRB301 series pull-wire emergency stop switch is a robust safety device designed for machine safety applications. This pull-wire E-Stop features a signalling output, an auxiliary contact, two openers, and three safety contacts to ensure maximum protection. It comes equipped with an electronic fuse, wire breakage detection, short-circuit recognition, and a start input for comprehensive system monitoring. The feedback circuit and automatic reset function enhance usability while the earth connection detection and integral system diagnostics maintain system integrity. Rated for both AC and DC use, it can handle 230 VAC at 6 A in utilisation category AC-15 and 24 VDC at 6 A in utilisation category DC-13. This makes the SRB301 a versatile solution for various industrial settings requiring reliable emergency stop functions.

Technical Specifications

Contact Material Silver
Degree of Protection IP40
EAN 4250120000000
eCl@ss Number, Version 11.0 27-27-27-04
eCl@ss Number, Version 9.0 27-27-27-04
Enclosure Material Plastic, glass-fibre reinforced thermoplastic, self-extinguishing
ETIM 6.0 EC002549
ETIM 7.0 EC002549
Gross Weight (g) 337.7
Maximum Actuating Speed (m/s) 0.5
Maximum Ambient Temperature (°C) 80
Maximum Cable Cross Section (mm²) 2.5
Maximum Fuse Rating 6 A gG D-fuse
Maximum Temperature (°C) 60
Minimum Ambient Temperature (°C) -30
Minimum Cable Cross Section (mm²) 0.25
Minimum Mechanical Life 20000000 Operations
Minimum Temperature (°C) -25
Mounting Type DIN Rail
Net Weight (g) 158
No. of Safety Contacts 5
Rated Impulse Withstand Voltage (kV) 4
Rated Insulation Voltage (V) 300
Sensor Height (mm) 133
Sensor Length (mm) 42.5
Series SRB301
Standards EN IEC 60947-5-1 / EN ISO 13849-1 / BG-GS-ET-15
Switching Element NO contact, NC contact
Switching Principle Slow action
Terminal Type Screw terminals
Thermal Test Current (A) 0.25
Utilisation Category DC-13 | AC-15
Utilisation Category AC-15 230 VAC
Utilisation Category DC-13 24 VDC


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