Omron G7SA-3A1B Safety Relay 3NO+1NC Forced Guided Contacts
SKU: G7SA-3A1BUSD 8.25
Omron G7SA-3A1B is a safety relay with 3NO+1NC forced guided contacts for machine safety interlock and monitoring circuits.
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Product Overview
The G7SA-3A1B supports safety circuit implementation where reliable contact behavior and compact panel integration are required. Force-guided contacts enhance safety logic confidence in protective systems. This relay is suited for machine guarding, emergency-stop chains, and compliance-oriented control architectures in OEM and retrofit projects.
- SKU: G7SA-3A1B
- Series: G7SA
- Voltage: 220VAC
Best-Fit Applications
- Implementing emergency-stop relay chains
- Controlling guard interlock safety paths
- Building compact safety control panels
- Retrofitting safety relays in older machines
- Standardizing safety relay hardware in OEM designs
- Improving reliability of machine protective control circuits
Buying Checklist
- Force-guided contacts support safety circuit integrity
- Miniature size helps in dense control cabinets
- Reliable option for compliance-oriented safety designs
- Good replacement component for existing safety panels
- Practical long-term safety relay strategy for maintenance
Technical Specifications
| Model | G7SA-3A1B |
|---|---|
| Series | G7SA |
| Contact Configuration | 3NO + 1NC |
| Coil Voltage Options | 12, 24, 110, 220VAC/DC |
| Contact Rating | 5A at 250VAC |
| Safety Standard | EN 50205 Class A |
| Mechanical Life | 10 million operations |
| Mounting | Socket mount (P7GA-11) |
| LED Indicator | Yes |
| Certifications | CE, TUV, UL |
Resources & Downloads
FAQ for G7SA-3A1B
What's the advantage of 3NO+1NC configuration?
3NO contacts for controlling multiple safety circuits (main contactor, brake, alarm). 1NC contact for safety monitoring/feedback. Provides flexibility for complex safety systems.
What coil voltages are available?
G7SA-3A1B available in: 12, 24, 110, 220VAC and 12, 24, 110, 220VDC. Select coil voltage matching your safety control circuit.
How do I verify forced guided contact operation?
Periodically test: energize relay, verify all NO closed and NC open. De-energize, verify all NO open and NC closed. Any deviation indicates contact welding or mechanical failure - replace immediately.
Can I use this for light curtain interfacing?
Yes, wire light curtain OSSD outputs to control relay coil. When light curtain blocked, relay de-energizes, stopping machine. For direct light curtain connection, use dedicated safety relay module.
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