Overview
The Omron G7SA-4A2B is a safety relay designed for critical machine safety and control applications. This 24VDC unit features 4PST-NO and DPST-NC contact configuration, ensuring reliable fail-safe operation in industrial automation environments. The G7SA-4A2B carries UL (File No. E41515), CSA C22.2 No.14, and South Korea S-mark certifications, making it suitable for regulated machinery safety applications.
Key Features
- Forcibly guided contacts ensure fail-safe operation with rapid response times of 20 ms for operate and 10 ms for release
- Gold-plated silver alloy contacts provide excellent conductivity and durability
- Flux-tight sealing ensures reliable performance in demanding industrial environments
- Socketable, through-hole mounting type facilitates convenient installation within control panels
- Operates within a temperature range of -40°C to 85°C for extreme environment reliability
- Low coil current of 20.8 mA and 500 mW power consumption for efficient operation
Technical Specifications
| Coil Voltage | 24 VDC |
| Contact Configuration | 4PST-NO / DPST-NC |
| Contact Current Rating | 6 A at 250 VAC; 6 A at 30 VDC |
| Maximum Switching Voltage | 250 VAC / 125 VDC |
| Coil Current | 20.8 mA (nominal) |
| Coil Resistance | 1.152 kΩ |
| Operating Temperature Range | -40°C to 85°C |
| Mounting Type | Socket / Through-hole PCB |
| Dimensions | 50 × 13 × 24 mm (L × W × H) |
| Standards & Certifications | EN/IEC 61810-1, EN/IEC 61810-3, EN/IEC 60947-5-1, UL, CSA, CE, RoHS Compliant |
| Number of Poles | 6 poles |
| Terminal Type | PC pin (through-hole) |
Typical Applications
- Machine safety interlocking circuits
- Emergency stop (E-stop) control systems
- Guarding and light curtain control
- Safety gate and door interlocks
- Robotics and automated assembly safety circuits
- Press brake and injection molding machine safety
- Machinery requiring EN 61810-3 certified fail-safe relays
Compatibility & Replacements
Compatible With
- Industrial control systems and machinery with 24VDC control voltage
- P7SA-10F and P7SA-10F-ND socket assemblies (track-mounting sockets)
- P7SA-10P socket assemblies (back-mounting PCB terminals)
- Standard DIN rail enclosures and control panels
- Safety circuits requiring EN/IEC 61810-3 compliance
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The G7SA-4A2B is part of the G7SA series and may replace other G7SA models depending on your specific control requirements and coil voltage specifications.
Works With
- Industrial safety PLCs and controllers supporting 24VDC relay modules
- Safety relay modules and safety control systems
- Machine safety and machinery control software (CE Machinery Directive compliant)
- Standard industrial automation protocols and hardwired safety circuits
- OMRON safety components and automation ecosystems
