Emergency Stop Switches / E-Stop Switches SSA-EB1 Flush-mount Emergency Stop Push Button; 40 mm Actuator; IP65; Contacts: 2NC; 4-pin M12 Integral QD; CH1=pins1&3 CH2=pins2&4
Specifications
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Lead time
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28 Days
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Mouser part number
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778-SSA-EB1P02ED1Q4A
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Rohs status
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Installation Quick Reference
Panel cutout: 22mm. Mount with the yellow backing plate visible (required by EN/ISO 13850).
Wiring: Wire NC contacts in series with the safety relay input channels. Use dual-channel wiring for SIL 3 / PLe applications. Never wire directly to a motor contactor.
Testing: Press the e-stop and verify the machine stops within the required time. Test the reset mechanism. Repeat monthly per EN/ISO 13850.
Dimensions
Troubleshooting
E-stop won't reset (twist/pull doesn't release)
Check for debris in the mechanism. For twist-release: turn clockwise 45-90 degrees. For push-pull: pull straight out firmly. If the mechanism is stuck, the internal latch may be damaged — replace the entire head assembly.
Machine doesn't stop when e-stop is pressed
Critical safety issue. Immediately lock out the machine. Check wiring — NC contacts must be in series with the safety relay. Verify the safety relay is functioning. A broken wire in an NC circuit should cause a stop, so check for a wiring bypass.
Safety relay faults after e-stop reset
The safety relay detects a cross-fault between the two monitoring channels. Check that both NC contacts on the e-stop are switching simultaneously. One contact may be welded closed — replace the contact block.
Where to Buy
Price range
$149.64 — $149.64
across 1 distributors
Quick Specs
- Lead time
- 28 Days
- Mouser part number
- 778-SSA-EB1P02ED1Q4A
- Rohs status
