Omron G7SA-5A1B DC24 — 6-Pole Safety Relay, 5 NO + 1 NC
SKU: G7SA-5A1B DC24USD 6.50
6-pole forcibly-guided safety relay, 5 NO + 1 NC contacts rated 6 A / 250 VAC, 24 VDC coil (20.8 mA, 500 mW), EN 61810-3 VDE certified, PCB terminals, pairs with P7SA-14F socket. For Cat 4 / PL e / SIL 3.
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Product Overview
The G7SA-5A1B DC24 is the 6-pole member of the Omron G7SA slim forcibly-guided safety relay family, with five normally-open contacts and one normally-closed contact (5PST-NO + SPST-NC) all rated 6 A at 250 VAC or 6 A at 30 VDC resistive. The 24 VDC coil draws 20.8 mA (500 mW, coil resistance 1,152 Ω) and is diode-protected for reverse polarity.
Where the G7SA-5A1B fits in the G7SA family
The G7SA family is Omron's slim PCB-mount safety relay series, split into 4-pole (10-terminal) and 6-pole (14-terminal) variants. The 4-pole group is G7SA-3A1B (3 NO + 1 NC) and G7SA-2A2B DC24 (2 NO + 2 NC — already covered in this catalogue). The 6-pole group is G7SA-5A1B (5 NO + 1 NC, this SKU), G7SA-4A2B (4 NO + 2 NC), and G7SA-3A3B (3 NO + 3 NC).
Sockets and panel wiring
The G7SA-5A1B ships as a bare PCB-mount relay with through-hole pins (flux-tight sealing). For DIN-rail mounting, plug the relay into a P7SA-14F socket family — P7SA-14F (screw terminals), P7SA-14F-ND (screw terminals with operation-indicator LED + coil surge-absorbing diode), P7SA-14F-ND-PU DC24 (Push-In Plus terminals, reducing wiring time by about 60 %), or P7SA-14P (PCB-mount socket). The -ND variants include a coil-side green LED that lights when the coil is energised, useful for diagnostic on a populated safety panel.
Key Features
- 6-pole slim PCB-mount safety relay, 5 NO + 1 NC forcibly-guided contacts
- 6 A at 250 VAC / 6 A at 30 VDC rated contact
- 24 VDC coil, 20.8 mA, 500 mW power consumption, 1,152 Ω coil resistance
- EN 61810-3, UL, CSA, CCC
- Suitable for Cat 4 / PL e / SIL 3 safety functions when wired correctly
- Forcibly-guided contact structure — welded NO cannot let NC close
- Operating time 30 ms max, response time 10 ms max
- 4,000 VAC dielectric strength coil-to-contact, 2,500 VAC between poles
- SKU: G7SA-5A1B DC24
- Series: G7SA (Forcibly-Guided Safety Relay)
- Voltage: 24 VDC
Best-Fit Applications
- Five-axis robot-cell safety output stage — one NO per contactor, one NC for EDM
- Press safety circuit with five redundant outputs and one diagnostic NC
- Large-format packaging line guard interlock with multiple independent shutdown channels
- Compact safety controller or safety sub-assembly inside an OEM machine
Buying Checklist
- Pick G7SA-5A1B DC24 when you need 5 NO + 1 NC forcibly-guided safety relay with 24 VDC coil
- Pick G7SA-2A2B DC24 for 2 NO + 2 NC, G7SA-3A1B for 3 NO + 1 NC
- Pick G7SA-4A2B for 4 NO + 2 NC, G7SA-3A3B for 3 NO + 3 NC
- Pick G7SA-5A1B DC12 if your safety controller outputs 12 VDC instead of 24 VDC
- Order P7SA-14F-ND-PU DC24 socket for DIN-rail mount with Push-In Plus terminals
- Order P7SA-14F-ND DC24 socket if you prefer screw terminals plus operation-indicator LED
Technical Specifications
| Model | G7SA-5A1B DC24 |
|---|---|
| Series | G7SA (Forcibly-Guided Safety Relay) |
| Type | Slim PCB-mount safety relay |
| Contact Configuration | 5PST-NO + SPST-NC (5 NO + 1 NC) |
| Poles | 6 poles (14 terminals) |
| Rated Load (Resistive) | 6 A at 250 VAC / 6 A at 30 VDC |
| Rated Load (Inductive) | 2 A at 250 VAC (cos φ = 0.4) |
| Coil Rated Voltage | 24 VDC |
| Coil Rated Current | 20.8 mA |
| Must-Operate Voltage | 70 % of rated (16.8 VDC min) |
| Must-Release Voltage | 15 % of rated (3.6 VDC min) |
| Terminal Type | PCB through-hole |
| Mounting Option | PCB or P7SA-14F(-ND)(-PU) socket |
| Operating Temperature | -25 to +70 °C |
| Certifications | EN 61810-1, EN 61810-3 (VDE), UL, CSA, CCC |
Resources & Downloads
FAQ for G7SA-5A1B DC24
What does forcibly-guided contact mean on the G7SA-5A1B?
Forcibly-guided contacts (per EN 61810-3) are mechanically linked so that if one contact welds closed due to overcurrent or end-of-life, the opposite contact cannot close on its own.
When should I pick G7SA-5A1B over G7SA-2A2B?
Pick G7SA-2A2B DC24 for the common case of dual-channel output with EDM (2 NO for two contactors + 2 NC for diagnostics/monitoring). Pick G7SA-5A1B DC24 when you need five independent NO outputs and one NC for EDM feedback — typical of a five-axis robot cell where each axis has its own safety contactor. If you need four NO + two NC, pick G7SA-4A2B. If you need three NO + three NC, pick G7SA-3A3B.
What socket should I use for the G7SA-5A1B?
Use one of the P7SA-14F socket family — the suffix indicates the variant. P7SA-14F is the basic screw-terminal socket. P7SA-14F-ND adds an operation-indicator LED plus a coil surge-absorbing diode. P7SA-14F-ND-PU DC24 uses Push-In Plus screwless terminals, which reduce wiring time by about 60 % compared with the screw-terminal version. P7SA-14P is a back-mounting PCB socket for OEM applications where the relay is soldered onto a custom board. All four accept the G7SA-5A1B DC24 relay module.
What is the coil current draw of the G7SA-5A1B DC24?
The 24 VDC coil draws 20.8 mA (about 500 mW) at the rated voltage. Coil resistance is 1,152 Ω. Must-operate voltage is 70 % of rated (16.8 VDC minimum to pick up) and must-release voltage is 15 % of rated (3.6 VDC maximum dropout). The coil is diode-protected against reverse polarity, so it can be driven directly from a 24 VDC PLC transistor output without an external flyback diode.
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