Omron G9SA-EX301 – G9SA Safety Relay Expansion Unit, 3 NO Safety Contacts + 1 NC Auxiliary
The Omron G9SA-EX301 is an expansion unit for Omron’s G9SA safety relay units. It adds 3 NO safety contacts (3PST-NO) and 1 NC auxiliary contact (SPST-NC), rated 5 A, to a G9SA emergency stop or two-hand controller unit, increasing the number of safety outputs without a second safety relay.
The G9SA-EX301 connects directly to a G9SA-301, G9SA-501, G9SA-321 or G9SA-TH301 and is controlled and powered by that unit, so no separate power supply or input wiring is needed. Its outputs are instantaneous: they open together with the base unit’s outputs. The contacts are rated for safety Category 4 applications. The slim 17.5 mm housing mounts on a DIN rail next to the base unit.
Key Technical Data – Omron G9SA-EX301
- Series: Omron G9SA safety relay
- Product type: Expansion unit (instantaneous outputs)
- Safety contacts: 3PST-NO (3 NO), Category 4
- Auxiliary contact: SPST-NC (1 NC)
- Contact rating: 5 A at 250 V AC / 5 A at 30 V DC (resistive load)
- Compatible base units: G9SA-301, G9SA-501, G9SA-321, G9SA-TH301
- Power: Supplied by the connected base unit (adds max. 2 VA / 2 W and 30 mA input current)
- Response time: approx. 10 ms
- Terminals: Screw
- Mounting: DIN rail
- Dimensions: approx. 17.5 × 111 × 98.2 mm
- Mechanical durability: min. 5,000,000 operations
- Electrical durability: min. 100,000 operations
Instantaneous or OFF-Delay Expansion?
- G9SA-EX301: instantaneous outputs (this item)
- G9SA-EX031-T075 / -T15 / -T30: OFF-delay outputs, with delay up to 7.5 s, 15 s or 30 s, for controlled stopping
The OFF-delay versions connect to the G9SA-301, G9SA-501 or G9SA-321 only. The expansion type must match the original safety circuit design. Our sales team can help you confirm the right unit.
Typical Applications
- Adding safety outputs to emergency stop circuits
- Switching several contactors or drives from one safety relay
- Two-hand control circuits needing extra safety contacts
- Replacement expansion units for installed G9SA systems
Buy Omron G9SA-EX301 from Atlantech Drives
- In stock or fast sourcing, shipped worldwide
- 12-month warranty
- Senior commercial advice on safety relay versions and lead time
- Quick, no-obligation quotes: get a quote today
