XB4-BS8445
AttivoATEX Emergency Stop Twist Release
ATEX-certified 40mm mushroom emergency stop for hazardous areas.
Applicazioni Comuni
Critical safety device on oil drilling platforms, gas compressor stations, and chemical reactors. ATEX Zone 1 certification ensures the e-stop itself cannot become an ignition source. Twist-to-release prevents accidental restart in hazardous environments.
Specifiche
|
Actuator Function
Momentary = springs back when released. Maintained/latching = stays pressed until pressed again.
|
Twist-to-release
|
|
Actuator Type
The button head style. Flush sits level with the bezel (prevents accidental presses). Extended protrudes for easy access.
|
Mushroom 40mm
|
|
ATEX Zone
The hazardous area classification. Zone 1 = gas likely present. Zone 2 = gas unlikely. Zone 21/22 = combustible dust.
|
Zone 1, Zone 21
|
|
Certifications
Third-party safety certifications. UL = required for US NEC installations. CE = EU compliance. CSA = Canadian standards.
|
ATEX, IECEx, CE
|
|
Color
Button/actuator color. Green = start/go, Red = stop/emergency, Yellow = caution, Blue = reset (per IEC 60204-1).
|
Red
|
|
Contact Configuration
Normally Closed — circuit is on until you press. Standard for stop/emergency functions. Wire in series with safety circuits.
|
1NC
|
|
Cutout Diameter
The hole size you drill in your panel to mount this button. 22mm is the most common industrial standard worldwide.
|
22mm
|
|
Explosion Group
The gas group the device is certified for. IIC covers hydrogen (most restrictive). IIB covers ethylene. IIA covers propane.
|
IIC
|
|
IP Rating
IP66: Dust-tight and withstands powerful water jets from any direction. Standard for outdoor and washdown applications.
|
IP66
|
|
Temperature Class
Maximum surface temperature. T6 (85°C) is most restrictive. T1 (450°C) is least. Must not exceed auto-ignition temp of the gas.
|
T6
|
Le specifiche con questa icona sono collegate alla pagina fonte originale del produttore
Sarà Necessario Anche
Questo è un componente modulare. Per un assemblaggio completo, potrebbe servire anche:
Alternative Compatibili
Questi prodotti sono riferimenti incrociati funzionalmente equivalenti di altri produttori.
Guida Rapida all'Installazione
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.
Dimensioni
Schema di Cablaggio
Risoluzione dei Problemi
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.
Dove Acquistare
Fascia di prezzo
$22.0 — $97.21
presso 4 distributori
Specifiche Rapide
- Actuator Function
- Twist-to-release
- Actuator Type
- Mushroom 40mm
- ATEX Zone
- Zone 1, Zone 21
- Certifications
- ATEX, IECEx, CE
- Color
- Red
Cosa Dicono gli Utenti
“XB4-BS8445 meets EN/ISO 13850 requirements. Always wire NC contacts through a safety relay, never direct to contactor. Test monthly.”
Approfondisci
Fonti Dati
Specifiche e dati prodotto tratti dalle seguenti fonti.
XB4BS8445 Product Page
https://www.se.com/ww/en/product/XB4BS8445/
Consultato il April 04, 2026
