Schneider Electric Harmony XB4 Contact & Light Block – 1NO Yellow, 24 V ac/dc

RS Stock No.:
Mfr. Prt No.:
Schneider Electric

Technical Reference

Legislation and Compliance

RoHS Status: Not Applicable

Statement of Conformity

RS Components
Statement of Conformity

This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.

Compliant Product Details
RS stock number 3309883
Product description Schneider Electric Harmony XB4 Contact & Light Block - 1NO Yellow, 24 V ac/dc
Manufacturer / Brand Schneider Electric
Manufacturer part number ZB4BW0B51

The foregoing information relates to product sold on, or after, the date shown below.


Date Apr 15, 2024

RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132

Country of Origin: FR

Product Details

Schneider Electric Harmony XB4 Series (ZB4-B) Light Block

The Harmony XB4 series of Light Blocks by Schneider Electric, specifically the ZB4 range of products offer you the reliability and certainty when you need it the most. The range is typically used as a body for a pilot light and can be used with pilot light heads.

SUPPLIED_WITH : Fixing collar, contact block and light block with

Features and benefits

• Complete body/light block assembly with built-in integral LED. The LED is protected but also easily accessible to be replaced for example.

• Steady signalling type, coming in several different colours including white, red, green.

• Lightweight, easy to fit and configure screw clamp terminal connectors. Easily removable and adjustable.

• 100,000-hour service life when used at the rated voltage and typical 25 ° C temperature.

• Schneider Green Premium product as standard across the XB4 Contact block range. Environmentally friendlier than alternatives, easy to dispose of safely.

• 18 month warranty period with Schneider Electric.

Protection ratings & Safety features -

• EN/IEC 60947-1, 60947-5-1 & 60947-5-4.

• UL 508 & CSA C22.2 No 14.

• Vibration resistance 5 gn (f = 2...500 Hz) conforming to IEC 60068-2-6

• Shock resistance to 30/50gn dependant on the duration (see datasheet for spec).

• Surge resistance with an ability to withstand surges at 1 kV (this conforms with IEC 61000-4-5)

Applications -

• Pilot lights, LED inditactor for push buttons


Attribute Value
Brand Schneider Electric
Terminal Type Screw
Current Rating 10 A
LED Included Yes
Contact Configuration 1NO
Body/Fixing Collar Included Yes
Illumination Type LED
Block Type Contact & Light Block
Series Harmony XB4
Voltage Rating 24 V ac/dc
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