Omron · Safety Relays & Controllers
G9SE-401 Safety Relay Unit
Part number G9SE-401
Slim 17.5 mm safety relay with 4 NO safety contacts and 1 NC auxiliary, for e-stop, door and light-curtain circuits up to PL e / SIL 3.
- CE
- UL
- cULus
- SIL3
- RoHS
- REACH

Overview
The G9SE packs four safety poles into a 17.5 mm housing — half the width of conventional safety relays — which saves panel space on series machines. The G9SE-401 accepts single- or dual-channel inputs from e-stops, door switches and light curtains, provides manual or automatic reset, and uses plug-in terminals so a failed unit is swapped in a minute. It is rated PL e / Category 4 and SIL 3.
Key features
- 4 NO safety poles (5 A) + 1 NC auxiliary in 17.5 mm
- PL e / Category 4 (ISO 13849-1), SIL 3 (IEC 61508)
- 1- or 2-channel input, manual or automatic reset
- Plug-in screw or push-in terminal blocks
- LED indication of power, inputs and output status
Typical applications
- E-stop circuits
- Safety door monitoring
- Light curtain evaluation
- Compact series machines
Technical specifications — G9SE-401
| Safety | |
|---|---|
| Safety level | Cat. 4 / PL e / SIL 3 |
| Electrical | |
| Safety contacts | 4 NO, 5 A |
| Auxiliary contact | 1 NC |
| Supply voltage | 24 V DC |
| Mechanical | |
| Width | 17.5 mm, DIN rail |
| Environment | |
| Operating temperature | -25…+55 °C |
Specifications are summarised from the manufacturer's documentation for selection purposes. Always confirm against the current datasheet before design-in; we send the datasheet and the exact ordering code with every quotation.
Related part numbers and alternatives
| Part number | Relationship | |
|---|---|---|
G9SE-201 | 2 NO safety contacts, 17.5 mm | Quote |
G9SE-221-T05 | 2 NO instantaneous + 2 NO off-delayed | Quote |
XPSUAF13AP | Schneider equivalent with universal supply voltage | Quote |
Not sure which variant you need? Send us the nameplate photo or the old part number and we will identify the current equivalent.
Supply, documentation and lead time
What you receive
- Genuine Omron product in original packaging
- Commercial invoice and packing list; Certificate of Conformance on request
- Datasheet, declaration of conformity and country of origin as issued by the manufacturer
- Manufacturer warranty, period stated on the quotation
How we quote
- Reply within one business day with price, lead time and stock position
- Alternatives proposed when they improve price or delivery
- Incoterms of your choice: EXW Hai Phong, FOB/FCA, CIF/DAP to your site
- Consolidated shipments for multi-line orders; export documentation for buyers outside Vietnam
Indicative HS code 8536.49 — final classification is confirmed on the commercial invoice.
Frequently asked questions
Is the G9SE-401 available from stock, and what is the lead time?
Availability of the G9SE-401 Safety Relay Unit changes with manufacturer production and distributor stock, so we confirm it per request rather than publishing a number that may be out of date. Send the part number and quantity through the quote form and you will receive stock position and lead time within one business day.
Is the G9SE-401 genuine, and what documentation comes with it?
We supply only genuine Omron products sourced from the manufacturer or authorized distribution channels. Each delivery includes the commercial invoice and packing list; a Certificate of Conformance, declaration of conformity and country-of-origin statement are provided on request, and the manufacturer's warranty applies.
Can you ship the G9SE-401 outside Vietnam?
Yes. We quote EXW Hai Phong, FCA/FOB, CIF or DAP and prepare the export documentation. Buyers in Japan, ASEAN, Europe and North America regularly consolidate multi-brand orders with us into one shipment.
What if the G9SE-401 is the wrong variant for my application?
Tell us the application in the notes field. Our engineers check the ordering code against your supply voltage, I/O, communication and environmental requirements and propose the correct variant or a successor part before quoting — at no charge.