Better World

Schneider Electric Harmony XB4 Series, Key Release, Emergency Stop Push Button Head

RS Stock No.:: 609-2639
Mfr. Part No.:: ZB4BS934
Brand:: Schneider Electric

Schneider Electric Harmony XB4 Series, Key Release, Emergency Stop Push Button Head

Price Each**

$205.91

(exc. GST)

$236.80

(inc. GST)

On back order for despatch 08/02/2025, delivery within 7 working days from despatch date.*

* Delivery dates may change based on your chosen quantity and delivery address.

FREE delivery for orders over $80 ex GST

Units	Per unit
1 +	$205.91

**price indicative

Better World

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Alternative

This product is not currently available. Here is our alternative recommendation.

Schneider Electric Harmony XB4 Series, Twist Release, Emergency Stop Push Button Head

RS Stock No.: 609-2623

Each

Was $149.78

You pay

$119.82

(exc. GST)

$137.79

(inc. GST)

RS Stock No.:: 609-2639
Mfr. Part No.:: ZB4BS934
Brand:: Schneider Electric

Domed heads for release pushbuttons, ZB4-B

The Harmony XB4 metal range of modular control and signalling units combines simplicity of installation, flexibility, and robustness. This range meets the requirements of the majority of industrial applications.
These units are either complete products or separate components for customer assembly.
This range of XB4 includes:
•Pushbuttons, selectors/key switches, emergency stop functions or multiple-headed pushbuttons designed for parameter settings, adjustments, and start/stop control of machines and installations
•Pilot lights, illuminated pushbuttons, illuminated selector switches, and
•illuminated Emergency stop functions designed for visual signalling
The installation process is both simple and quick:
•Mounting by single installer (self-maintaining of the head in its cut-out)
•Clip-together component system (head, body, contact blocks, and LED)
•Attached using a single locking screw
•Anti-loosening system for screw clamp terminals on contact blocks

Environment

The performance of the Harmony XB4 range meets the most demanding international standards and approval, such as:
•EN/IEC, CE marking, UL, CSA, CCC, EAC, JIS, NEMA, and marine approvals
•Protection against ingress of solid objects, dust, and water: IP 66, 67, 69,69K and type 4X
•Shock protection level up to IK06
•High vibration resistance with shake proof connection screws (periodic retightening unnecessary)
For outdoor applications the operating temperature oscillate from -40 °C to +70 °C/-40 °F to +158 °F.

Application

The range of XB4 can be used in the following applications:
•Industry (machine and control panels in packaging, material handling, material working, and pumping)
•Building and infrastructure (energy distribution panels, public works, restaurants, commercial buildings and airports)

Schneider Electric Emergency Stop - ZB4BS934

This ZB4BS934 is a chromium plated unit (bezel material), which has mechanical durability up to 300000 cycles.
The resistance to high pressure washer is 7000000 Pa at 55 °C, distance: 0.1 m.
This item is classified as ’’ Green Premium Product ’’, which provides the following:
•Environmental information about the unit
•Minimal use of hazardous substances in, and beyond, compliance with regulations (RoHS, REACh)
•A promise of sustainable and environmentally friendly performance
•Product Environmental Profiles (PEPs) for easy carbon footprint calculation
•End-of-life instructions for reduced cost and optimised recycling

Frequently asked questions & answers

What is the different between a push button switch for an emergency stop and a general-purpose push button switch?

A general-purpose push button switch is used for controls, e.g. to start machine operation or simply to switch modes. An emergency stop push button switch however, is mainly used as a safety measure to stop hazardous events.

What is the electrical shook protection class for this item?

This is a Class 1 conforming to IEC 61140

ZB4BS934 Emergency Stop Push Button Switching Off Head.

Harmony XB4 range.

ZB4 Series.

Chromium plated metal bezel.

Diameter 22 mm (mounting).

Round shaped push button.

Red mushroom profile 30 mm diameter, no marking.

Trigger action and mechanical latching with key release (centre withdrawal).

Ronis 455 keylock.

Durability 300000 cycles.

Weight 0.094 kg.

Composition.

C7 for 4 contacts using single blocks in front mounting. C8 for 4 contacts using single and double blocks in front mounting. C11 for 3 contacts using single blocks in front mounting. C15 for 1 contacts using single blocks in front mounting. C10 for 4 contacts using single and double blocks in front mounting.

Protection.

NEMA 13, NEMA 4X, NEMA 4, NEMA 12.

IK03 conforming to IEC 50102.

Vibration resistance conforming to IEC 60068-2-6.

Shock resistance conforming to IEC 60068-2-27.

Standards.

UL 508, EN/ISO 13850, EN/IEC 60947-5-4, EN/IEC 60947-1, EN/IEC 60947-5-5, JIS C8201-5-1, EN/IEC 60204-1, IEC 60364-5-53, GB 14048.5, EN/IEC 60947-5-1, CSA C22.2 No 14, JIS C8201-1.

Certificates.

RINA, LROS (Lloyds register of shipping), CSA, UL listed, DNV, BV, GL.

Attribute	Value
Series	Harmony XB4
Manufacturer k.i.m.	Schneider Electric
Cutout Diameter	22mm
Primary Keyword	Emergency Stop Push Button Head
Push Button Actuation	Key Release
Better World Product	Yes
Push Button Material	Plastic
Illuminated	No
Better World Verification	Green Premium