SchneiderPushbuttons, Switches, Pilot Lights, Control Stations and Joysticks

XB4BC21

Name: XB4BC21
Brand: Schneider
SKU: XB4BC21

Schneider Electric's XB4BC21 is a high-quality 40mm mushroom head pushbutton with a spring return/impulse mechanism and metal bezel, designed for reliable performance in various applications.

Product ModelXB4BC21

Product ID35353

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
Reliable PerformanceThe Schneider Electric XB4BC21 pushbutton ensures consistent operation with its spring return/impulse mechanism, making it ideal for critical applications.
2
Durable DesignConstructed with a metal bezel, this pushbutton offers durability and resistance to wear and tear, ensuring long-lasting performance.
3
Easy InstallationThe XB4BC21 features a modular design, making it simple to install and integrate into your system without hassle.
4
High-Quality MaterialsMade from high-quality materials, this pushbutton provides a smooth and reliable operation, enhancing the overall efficiency of your system.
5

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Range of Product

Harmony XB4

Device short name

XB4

Product or Component Type

Push-button

Bezel material

Chromium plated metal

Fixing collar material

Zamak

Mounting diameter

0.9 in (22.5 mm)

Versatile ApplicationsSuitable for a wide range of applications, including industrial control systems, the XB4BC21 is a versatile choice for any environment requiring a reliable pushbutton solution.

Sale per indivisible quantity

Shape of signaling unit head

Round

Type of operator

spring return

Operator profile

Black mushroom Ã 40 mm, unmarked

Head type

Standard

Contacts type and composition

1 NO

Contact operation

Slow-break

Connections - terminals

Screw clamp terminals, <= 2 x 1.5 mmÂ² with cable end IEC 60947-1Screw clamp terminals, 1 x 0.22...2 x 2.5 mmÂ² without cable end IEC 60947-1

Net Weight

0.269 lb(US) (0.122 kg)

Resistance to high pressure washer

1015.3 psi (7000000 Pa) 131 °F (55 °C) 0.1 m

Contacts usage

Standard contacts

Positive opening

Without

Operating travel

0.1 in (2.6 mm) NO changing electrical state)0.2 in (4.3 mm) total travel)

Operating force

3.8 N NO changing electrical state

Mechanical durability

5000000 cycles

Tightening torque

7.08...10.6 lbf.in (0.8...1.2 N.m) IEC 60947-1

Shape of screw head

Cross Philips no 1Cross pozidriv No 1Slotted flat Ã 4 mmSlotted flat Ã 5.5 mm

Contacts material

Silver alloy (Ag/Ni)

Short-circuit protection

10 A cartridge fuse gG IEC 60947-5-1

[Ith] conventional free air thermal current

10 A IEC 60947-5-1

[Ui] rated insulation voltage

600 V 3)IEC 60947-1

[Uimp] rated impulse withstand voltage

6 kV IEC 60947-1

[Ie] rated operational current

3 A 240 V, AC-15, A600 IEC 60947-5-16 A 120 V, AC-15, A600 IEC 60947-5-10.1 A 600 V, DC-13, Q600 IEC 60947-5-10.27 A 250 V, DC-13, Q600 IEC 60947-5-10.55 A 125 V, DC-13, Q600 IEC 60947-5-11.2 A 600 V, AC-15, A600 IEC 60947-5-1

Electrical durability

1000000 cycles, AC-15, 2 A 230 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C1000000 cycles, AC-15, 3 A 120 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C1000000 cycles, AC-15, 4 A 24 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C1000000 cycles, DC-13, 0.2 A 110 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C1000000 cycles, DC-13, 0.5 A 24 V 3600 cyc/h 0.5 IEC 60947-5-1 appendix C

Electrical reliability

Î < 10exp(-6) 5 V 1 mA in clean environment IEC 60947-5-4Î < 10exp(-8) 17 V 5 mA in clean environment IEC 60947-5-4

Device presentation

Complete product

Protective treatment

Ambient Air Temperature for Storage

-40...158 °F (-40...70 °C)

Ambient Air Temperature for Operation

-40...158 °F (-40...70 °C)

Overvoltage category

Class I IEC 60536

IP degree of protection

IP66 IEC 60529IP69IP69K

NEMA degree of protection

NEMA 13NEMA 4X

IK degree of protection

IK06 conforming to IEC 50102

Standards

IEC 60947-5-1CSA C22.2 No 14IEC 60947-1IEC 60947-5-5UL 508JIS C8201-5-1IEC 60947-5-4JIS C8201-1

Product Certifications

CSALROS (Lloyds register of shipping)BVUL ListedDNV

Vibration resistance

5 gn 2...500 Hz)IEC 60068-2-6

Shock resistance

10 gn 11 ms) half sine wave acceleration IEC 60068-2-27