Omron G9SA-501 Safety Relay Unit
The Omron G9SA-501 Safety Relay Unit provides robust protection with 3PST-NO main contacts, one SPST-NC auxiliary contact, and dedicated 2-channel safety input support. Designed for flexible voltage operation, it runs on 24 VAC/VDC or 100–240 VAC with an 85%–110% tolerance. Power consumption remains efficient at 7.4 VA/2.6 W or 11 VA depending on supply. With 30 ms operating time, 10 ms response, and excellent vibration/shock resilience, it ensures dependable safety control. Manufactured by Omron and categorized under Omron Relay, the unit belongs to the Omron G9SA Series.
| Brand | Omron |
| Product Type | Safety Relay Unit |
| Model Number | G9SA-501 |
Omron G9SA-501 Safety Relay Unit - Technical Specifications
| Specification | Value |
|---|---|
| Main contacts | 3PST-NO |
| Auxiliary contact | SPST-NC |
| Number of input channels | 2 channels |
| Rated voltage | 24 VAC/VDC; 100 to 240 VAC |
| Operating voltage range | 85% to 110% of rated power supply voltage |
| Power consumption | 24 VAC/VDC: 7.4 VA/2.6 W max. 100 to 240 VAC: 11 VA max. |
| Contact resistance | 100 mΩ |
| Operating time | 30 ms max. |
| Response time | 10 ms max. |
| Vibration resistance | 10 to 55 to 10 Hz, 0.375-mm single amplitude (0.75-mm double amplitude) |
| Shock resistance | Destruction 300 m/s2 Malfunction 100 m/s2 |
| Ambient operating temperature | −25 to 55°C (with no icing or condensation) |
| Ambient operating humidity | 35% to 85% |
| Terminal tightening torque | 0.6 N·m |
| Weight | Approx. 270 g |
Engineered for reliability and precision, the Omron G9SA-501 features 3PST-NO main contacts and a SPST-NC auxiliary contact, making it suitable for systems requiring 2 input channels. The unit supports a wide voltage input range of 24 VAC/VDC to 240 VAC, functioning efficiently within 85% to 110% of rated voltage. Its response time of just 10 ms ensures quick reaction in critical safety scenarios, while the operating time remains within 30 ms, ensuring seamless integration with emergency stop and safety interlock systems.
With a maximum power consumption of 7.4 VA/2.6 W on 24 VAC/VDC and 11 VA on 100–240 VAC, the G9SA-501 balances performance with energy efficiency. Its rugged design can withstand vibration frequencies from 10 to 55 Hz and shocks up to 300 m/s², making it suitable for Indian industrial environments. The device operates reliably in ambient conditions ranging from −25°C to 55°C with humidity levels between 35% to 85%. Its sturdy terminals, with a tightening torque of 0.6 N·m, and a compact weight of 270 g, allow for secure panel mounting and long-term stability.
Backed by Omron's global reputation for safety automation, the G9SA-501 safety relay is trusted by engineers and OEMs seeking consistent performance in high-risk operational zones.
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