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Specification & Description
| Specification | Description |
|---|---|
| Part Number | XB4BT842 |
| Manufacturer | Schneider |
| Series | Harmony XB4 |
| Product Type | Emergency Stop Push Button |
| Mounting Diameter | 22 mm |
| Operator Profile | Red mushroom Ø 40 mm, unmarked |
| Action Type | Trigger action and mechanical latching |
| Reset | Push-pull |
| Contact Operation | Slow-break |
| Contacts Type and Composition | 1 Normally Closed (NC) |
| Terminals | Screw clamp terminals, <= 2 x 1.5 mm² with cable end; >= 1 x 0.22 mm² without cable end |
| Material | Bezel: Chromium plated metal; Collar: Zamak |
| Height | 47 mm |
| Width | 40 mm |
| Depth | 82 mm |
| Net Weight | 0.125 kg |
| Operating Travel | 1.5 mm (NC changing electrical state), 4.3 mm (total travel) |
| Mechanical Durability | 3000000 cycles |
| Tightening Torque | 0.8…1.2 N.m |
| Screw Head Shape | Cross compatible with Philips no 1 screwdriver; Slotted compatible with flat Ø 4 mm screwdriver |
| Contacts Material | Silver alloy (Ag/Ni) |
| Short-circuit Protection | 10 A cartridge fuse type gG |
| Rated Insulation Voltage | 600 V (pollution degree 3) |
| Rated Impulse Withstand Voltage | 6 kV |
| Rated Operational Current | 3 A at 240 V AC-15, A600; 0.1 A at 600 V DC-13, Q600 |
| IP Degree of Protection | IP66, IP67, IP69, IP69K |
| Standards | EN/IEC 60947-5-1, EN/IEC 60204-1, EN/IEC 60947-5-4, and others |
| Product Certifications | DNV, GL, LROS, CSA, UL listed, BV |
| Vibration Resistance | 5 gn (f= 2…500 Hz) |
| Shock Resistance | 30 gn (duration = 18 ms) for half sine wave acceleration |
The Schneider XB4BT842 is a robust and reliable emergency stop push button designed for seamless integration into various control systems. This component, part of the Harmony XB4 series, features a 22 mm mounting diameter and is crafted with a chromium-plated metal bezel and a Zamak fixing collar, ensuring durability and longevity in demanding industrial environments.
The device is equipped with a red mushroom head, 40 mm in diameter, which provides a conspicuous and accessible means for triggering emergency shutdowns. The push-pull operation allows for swift activation and deactivation, while the trigger action and mechanical latching ensure that the button remains engaged until manually reset, enhancing safety protocols.
With a single normally closed (NC) contact configuration, the XB4BT842 offers slow-break operation, which is critical for the immediate cessation of machine functions in emergency situations. The screw clamp terminals accommodate a range of wire sizes, ensuring a secure and reliable electrical connection.
This emergency stop button is designed to withstand rigorous use, boasting a mechanical durability of 3 million cycles. It also offers a high degree of protection against environmental factors, with IP66, IP67, IP69, and IP69K ratings, making it suitable for use in areas where dust, water, and high-pressure washdowns are prevalent.
The XB4BT842 is compliant with international standards, including EN/IEC 60947-5-1, EN/IEC 60204-1, and EN/ISO 13850, among others, and holds product certifications from DNV GL, LROS, CSA, UL Listed, and BV. This ensures that the component meets rigorous quality and safety requirements, making it a trusted choice for emergency stop applications across a wide range of industries.
Commonly Asked Questions
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Frequently Asked Questions
What is the function of this emergency stop button?
The emergency stop button is designed to halt operations or machinery immediately in the event of an emergency. It is a safety device that ensures quick action can be taken to prevent accidents or damage.
Can this button be used in outdoor environments?
Yes, the button is designed with a high degree of protection against dust and water ingress, making it suitable for both indoor and outdoor applications.
What are the dimensions required for mounting this button?
The button requires a mounting diameter of 22 mm and is suitable for panels with a clamping thickness of 1 to 6 mm.
What type of contacts does this emergency stop button have?
This emergency stop button features a single normally closed (NC) contact configuration, which opens upon actuation for safety control circuits.
How is the button reset after activation?
After being pressed for emergency stopping, the button can be reset by a pull action, also known as a push-pull reset mechanism.
What is the IP rating of this emergency stop button?
The button has an IP rating of IP66, IP67, and IP69K, indicating a high level of protection against dust and water, including high-pressure water jets.
What materials are used in the construction of this button?
The bezel of the button is made from chromium plated metal, and the fixing collar is constructed from Zamak, providing durability and resistance to harsh conditions.
Is this button compliant with international safety standards?
Yes, it complies with several international safety standards, including EN/IEC 60947-5-1, ensuring its reliability and safety in various applications.
What is the electrical durability of this emergency stop button?
The button is rated for electrical durability of 1,000,000 cycles for certain AC and DC operational currents, ensuring a long service life under specified conditions.
Does this button have a positive opening operation?
Yes, it features a positive opening operation which is a safety feature that ensures the contacts will open when the button is actuated, even if the contacts are welded or stuck.
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