Square D 40mm Mushroom Head Emergency Stop Pushbutton, 22mm, XB7NS8442
$59.20
Schneider Electric Harmony XB7 monolithic emergency stop pushbutton with 40mm red mushroom head, 22mm mounting, latching turn-to-release mechanism, 1NC contact, screw clamp terminals, IP65 front face rated, 100,000-cycle mechanical durability.
Square D 40mm Mushroom Head Em...
$59.20
Available on backorder
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Overview
The Square D (Schneider Electric) Harmony XB7NS8442 is a monolithic emergency stop pushbutton designed for reliable machine safety applications. Featuring a 40mm red mushroom head operator with a latching turn-to-release mechanism, this device provides a clear, highly visible emergency shutdown control that stays engaged until manually reset by the operator. The monolithic design integrates the operator head and contact block into a single compact unit for fast installation in a standard 22mm panel cutout.
Built for demanding industrial environments, the XB7NS8442 delivers IP65 ingress protection on the front face for resistance to dust and water jets, while the snap-action 1NC contact ensures positive circuit interruption compliant with IEC 60947-5-1 Appendix K. Rated for 100,000 mechanical cycles and 1,000,000 electrical cycles, this emergency stop pushbutton is engineered for long-term reliability in manufacturing, process control, and machinery safety applications.
Features
- 40mm red mushroom head operator provides high visibility and easy activation in emergency situations
- Latching turn-to-release mechanism prevents accidental restart after an emergency stop event
- Monolithic construction integrates operator and 1NC contact block for simplified panel mounting
- IP65 front face protection guards against dust ingress and low-pressure water jets
- Positive opening contact per IEC 60947-5-1 Appendix K ensures forced contact separation for safety-critical circuits
- Screw clamp terminals accept conductors from 0.5 mm² to 2.5 mm² for flexible wiring options
- 100,000-cycle mechanical durability and 1,000,000-cycle electrical durability
- 250V rated insulation voltage with 4kV impulse withstand rating
- Fits standard 22mm (0.88 in.) panel cutout with fixing nut mounting
- Compliant with IEC 60947-1, IEC 60947-5-1, IEC 60947-5-5, ISO 13850, UL 508, and CSA C22.2 No 14
Specifications
| Manufacturer | Square D (Schneider Electric) |
|---|---|
| Model Number | XB7NS8442 |
| Product Range | Harmony XB7 |
| Product Type | Emergency Stop Pushbutton |
| Device Presentation | Monolithic (integrated head + contact block) |
| Mounting Diameter | 22mm (0.88 in.) |
| Operator Profile | Red Mushroom Head, 40mm diameter, unmarked |
| Operating Mechanism | Latching, Turn to Release |
| Contact Configuration | 1NC |
| Contact Operation | Snap Action, Positive Opening (IEC 60947-5-1 App. K) |
| Terminal Type | Screw Clamp, 0.5–2.5 mm² |
| Rated Insulation Voltage (Ui) | 250V |
| Impulse Withstand Voltage (Uimp) | 4kV |
| Rated Current (Ie) | 1.5A at 120V AC-15 / 0.75A at 240V AC-15 |
| Mechanical Durability | 100,000 cycles |
| Electrical Durability | 1,000,000 cycles |
| IP Rating | IP65 (front face) / IP20 (rear face) |
| NEMA Rating | NEMA 3, NEMA 12 |
| Operating Temperature | -13°F to 158°F (-25°C to 70°C) |
| Storage Temperature | -40°F to 158°F (-40°C to 70°C) |
| Overall Dimensions (W x H x D) | 1.6 x 1.6 x 2.8 in. (40 x 40 x 72 mm) |
| Weight | 0.077 lb (0.035 kg) |
| Color | Red |
| Country of Origin | Indonesia |
| UPC | 78590197960 |
| Standards | IEC 60947-1, IEC 60947-5-1, IEC 60947-5-5, IEC 60204-1, ISO 13850, UL 508, CSA C22.2 No 14 |
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