Description

Schneider XB4BS8442 Harmony | Emergency Stop Switch

1. Overview

The Schneider XB4BS8442 is a high-quality emergency stop switch from the Harmony XB4 series, designed for industrial safety applications. It features a 40mm red mushroom head, a 22mm metal mounting base, a trigger latching mechanism, and a turn-to-release function for enhanced safety. This switch includes 1 NC (Normally Closed) contact, ensuring reliable emergency shutdown in critical systems.

2. Key Features

  • Emergency Stop Function: Ensures quick machine shutdown for safety.
  • Trigger Latching Mechanism: Locks in place upon activation to prevent accidental resets.
  • Turn-to-Release: Rotational reset for controlled restart.
  • 1 NC Contact: Breaks the circuit when pressed.
  • Robust Metal Design: Ensures durability and resistance to harsh environments.
  • Ø40mm Mushroom Head: Provides easy and intuitive operation.
  • Ø22mm Mounting Size: Standard industrial compatibility.

3. Technical Specifications

  • Product Series: Harmony XB4
  • Type: Emergency Stop Switch
  • Head Type: Mushroom, red
  • Head Diameter: Ø40mm
  • Mounting Diameter: Ø22mm
  • Operation: Push to stop, turn to release
  • Contact Configuration: 1 NC (Normally Closed)
  • Material: Metal body for enhanced durability
  • Terminal Type: Screw clamp terminal
  • Standards Compliance: IEC 60947-5-1, CE, UL, and EN ISO 13850

4. Benefits

  • Enhanced Safety: Provides immediate shutdown in emergency situations.
  • Reliable Performance: Maintains a secure latching mechanism until manually reset.
  • Easy Installation: Standard Ø22mm mounting size with screw terminals.
  • Durable Construction: Metal body ensures long-lasting operation in industrial environments.
  • Compliant with Safety Standards: Meets global safety regulations for industrial machinery.

5. Applications

  • Industrial Machinery & Equipment
  • Manufacturing and Processing Plants
  • Control Panels & Automation Systems
  • Power Stations & Electrical Panels
  • Conveyor Systems & Material Handling Equipment

6. Conclusion

The Schneider XB4BS8442 Harmony Emergency Stop Switch is an essential safety component for industrial control systems. With its trigger latching mechanism, turn-to-release function, and robust metal design, it ensures reliable emergency shutdown and compliance with safety regulations. Ideal for industrial automation, machinery protection, and critical emergency stop applications.

Additional information

brands

Schneider Electric

Specifications

Main
Range of product Harmony XB4
Product or component type Emergency switching off push-button Emergency stop push-button
Device short name XB4
Bezel material Chromium plated metal
Fixing collar material Zamak
Mounting diameter 22.5 mm
Sale per indivisible quantity 1
Shape of signaling unit head Round
Type of operator trigger action and mechanical latching
Head type Standard
Reset Turn to release
Operator profile Red mushroom Ø 40 mm, unmarked
Contact operation Slow-break
Connections - terminals Screw clamp terminals, <= 2 x 1.5 mm² with cable end conforming to IEC 60947-1 Screw clamp terminals, >= 1 x 0.22 mm² without cable end conforming to IEC 60947-1
Complementary
Height 47 mm
Width 40 mm
Depth 82 mm
Terminals description ISO n°1 (21-22)NC
Net weight 0.118 kg
Resistance to high pressure washer 7000000 Pa at 55 °C, distance : 0.1 m
Contacts type and composition 1 NC
Contacts usage Standard contacts
Positive opening With conforming to IEC 60947-5-1 appendix K
Operating travel 1.5 mm (NC changing electrical state) 4.3 mm (total travel)
Mechanical durability 300000 cycles
Tightening torque 0.8…1.2 N.m conforming to IEC 60947-1
Shape of screw head Cross compatible with Philips no 1 screwdriver Cross compatible with pozidriv No 1 screwdriver Slotted compatible with flat Ø 4 mm screwdriver Slotted compatible with flat Ø 5.5 mm screwdriver
Contacts material Silver alloy (Ag/Ni)
Short-circuit protection 10 A cartridge fuse type gG conforming to IEC 60947-5-1
[Ith] conventional free air thermal current 10 A conforming to IEC 60947-5-1
[Ui] rated insulation voltage 600 V (pollution degree 3) conforming to IEC 60947-1
[Uimp] rated impulse withstand voltage 6 kV conforming to IEC 60947-1
[Ie] rated operational current 3 A at 240 V, AC-15, A600 conforming to IEC 60947-5-1 6 A at 120 V, AC-15, A600 conforming to IEC 60947-5-1 0.1 A at 600 V, DC-13, Q600 conforming to IEC 60947-5-1 0.27 A at 250 V, DC-13, Q600 conforming to IEC 60947-5-1 0.55 A at 125 V, DC-13, Q600 conforming to IEC 60947-5-1 1.2 A at 600 V, AC-15, A600 conforming to IEC 60947-5-1
Electrical durability 1000000 cycles, AC-15, 2 A at 230 V, operating rate <3600 cyc/h, load factor: 0.5 conforming to IEC 60947-5-1 appendix C 1000000 cycles, AC-15, 3 A at 120 V, operating rate <3600 cyc/h, load factor: 0.5 conforming to IEC 60947-5-1 appendix C 1000000 cycles, AC-15, 4 A at 24 V, operating rate <3600 cyc/h, load factor: 0.5 conforming to IEC 60947-5-1 appendix C 1000000 cycles, DC-13, 0.2 A at 110 V, operating rate <3600 cyc/h, load factor: 0.5 conforming to IEC 60947-5-1 appendix C 1000000 cycles, DC-13, 0.5 A at 24 V, operating rate <3600 cyc/h, load factor: 0.5 conforming to IEC 60947-5-1 appendix C
Electrical reliability Λ < 10exp(-6) at 5 V and 1 mA in clean environment conforming to IEC 60947-5-4 Λ < 10exp(-8) at 17 V and 5 mA in clean environment conforming to IEC 60947-5-4
Device presentation Complete product
Environment
Protective treatment TH
Ambient air temperature for storage -40…70 °C
Ambient air temperature for operation -40…70 °C
Electrical shock protection class Class I conforming to IEC 60536
IP degree of protection IP66 conforming to IEC 60529 IP67 IP69 IP69K
NEMA degree of protection NEMA 13 NEMA 4X
IK degree of protection IK06 conforming to IEC 50102
Standards IEC 60947-5-1 UL 508 CSA C22.2 No 14 ISO 13850 IEC 60947-5-5 JIS C8201-5-1 IEC 60947-1 IEC 60947-5-4 IEC 60204-1 IEC 60364-5-53 JIS C8201-1
Product certifications CSA LROS (Lloyds register of shipping) BV UL listed DNV
Vibration resistance 5 gn (f= 2…500 Hz) conforming to IEC 60068-2-6
Shock resistance 30 gn (duration = 18 ms) for half sine wave acceleration conforming to IEC 60068-2-27 50 gn (duration = 11 ms) for half sine wave acceleration conforming to IEC 60068-2-27
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 4.500 cm
Package 1 Width 5.400 cm
Package 1 Length 8.800 cm
Package 1 Weight 124.000 g
Unit Type of Package 2 S03
Number of Units in Package 2 80
Package 2 Height 30.000 cm
Package 2 Width 30.000 cm
Package 2 Length 40.000 cm
Package 2 Weight 10.428 kg
Unit Type of Package 3 P06
Number of Units in Package 3 640
Package 3 Height 75.000 cm
Package 3 Width 60.000 cm
Package 3 Length 80.000 cm
Package 3 Weight 93.564 kg

Main documents

Main documents

Datasheet Download Datasheet
Product datasheet XB4BS8442
Instruction sheet
Download
Catalogue Download
CAD Files Download
Environmental disclosure
Download

Main documents

Datasheet Download Datasheet
Product datasheet XB4BS8442
Instruction sheet
Download
Catalogue Download
CAD Files Download
Environmental disclosure
Download

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