MPN: XB4BS842 — industrial control spare part, in stock at TGK Parts.
The XB4BS842 is the Schneider Harmony 40 mm emergency stop button with twist-release mushroom head and 2NC positive-opening contacts — the standard e-stop on European machine builds and safety circuits. The latching twist-release mechanism and direct-opening NC contacts are what safety standards demand for category 0/1 stops.
In stock with matching contact blocks and enclosure accessories; positive-opening operation verified on every unit before shipping.
| MPN | XB4BS842 |
|---|---|
| Type | Emergency stop button, 40mm mushroom head |
| Release | Twist-to-release latching |
| Contacts | 2NC positive-opening (direct opening) |
| Bezel | 40mm, yellow background, red actuator |
| Protection | IP65 (IP66 with boot) |
| Standard | IEC 60947-5-5, ISO 13850 |
| Condition | New (sealed) |
| Warranty | 12 months |
Replacement and spare part for industrial automation equipment — production lines, CNC machines, packaging machinery, textile machinery, printing equipment and more.
Yes — 2NC contact blocks are included and pre-assembled. Additional NO/NC blocks can be added if your circuit needs a monitoring contact.
Yes — wire the 2NC contacts in a dual-channel loop to your safety relay; positive-opening operation is guaranteed by design.
Twist-release is the standard for panels where operators need quick local reset. Key-release variants are available where reset must be restricted.