Schneider Electric ZBE101 Contact Block

Technical Overview

Single slow-break 1 NO contact block with silver alloy contacts, screw clamp terminals, rated for 600V. Fits 22mm Harmony XB4 and XB5 series pilot devices.

Key Features

Equipped with 1 Normally Open (NO) standard contact [1.1.1]
Constructed with durable silver alloy (Ag/Ni) contacts for optimal conductivity
Compatible with the widely adopted Harmony XB4 and XB5 22 mm control and signaling ranges
Offers a high mechanical durability of 10,000,000 cycles for extended service life
IP20 ingress protection rating conforming to IEC 60529
Features versatile screw clamp terminals supporting easy and secure wire connections
Complies with stringent global industrial standards including EN/IEC 60947-5-1, UL 508, and CSA C22.2 No 14

Technical Specification Matrix

Parameter	Value
Range Compatibility	Harmony XB4, Harmony XB5
Contact Type	1 NO
Contact Operation	Slow-break
Contact Material	Silver alloy (Ag/Ni)
Termination Style	Screw clamp terminals
Rated Insulation Voltage (Ui)	600 V conforming to IEC 60947-1
Rated Impulse Withstand Voltage (Uimp)	6 kV conforming to IEC 60947-1
Conventional Free Air Thermal Current (Ith)	10 A conforming to IEC 60947-5-1
Rated Operational Current (Ie)	6 A at 120 V AC-15; 3 A at 240 V AC-15; 1.2 A at 600 V AC-15; 0.55 A at 125 V DC-13; 0.27 A at 250 V DC-13
Short-Circuit Protection	10 A cartridge fuse type gG conforming to IEC 60947-5-1
Mechanical Durability	10,000,000 cycles
IP Rating	IP20 conforming to IEC 60529
Tightening Torque	0.8...1.2 N.m conforming to IEC 60947-1
Operating Travel	2.6 mm (NO changing electrical state), 4.3 mm (total travel)
Operating Force	2.3 N (NO changing electrical state)
Physical Weight (kg)	0.01
Dimensions L x W x H (cm)	3.2 x 2.8 x 1

Industrial Applications

1. Industrial Control Panel Push Button Assembly

Integrating auxiliary signaling contacts into control panels for manufacturing equipment. This block attaches to standard Harmony XB4 or XB5 22mm operator heads, allowing an operator's physical push of a start button to close a circuit.

Problem Solved

Ensures reliable pilot circuit control with up to 10 million operation cycles, minimizing down-time caused by contact fatigue or mechanical wear in high-frequency production environments.

Auxiliary Contact22mm OperatorControl PanelSlow-break ContactHarmony XB4

2. Heavy-Duty Motor Starter Interlocking

Acting as an auxiliary interlock contact for large contactors or motor control centers (MCCs) where 120V AC or 240V AC control voltage must be switched reliably when an operator enables a system.

Problem Solved

Prevents high current switching issues on lower-rated auxiliary contacts. The ZBE101's silver alloy contacts are rated for AC-15 (6A at 120V, 3A at 240V), providing the robust electrical switching required for heavy inductive coils.

Interlock CircuitMotor ControlAC-15 RatingSilver Alloy ContactsScrew Clamp Connection

3. Safety Enclosure Feedback Loops

Deploying standard status monitoring contacts within machinery guard-locking and signaling stations, providing real-time Normally Open status logic to PLC digital input cards.

Problem Solved

Provides IP20 terminal finger safety and reliable slow-break contact travel (2.6 mm to change state), preventing erratic signal fluctuations and false status readings under typical industrial vibration levels.

Feedback LoopSlow-breakIP20 Ingress ProtectionPLC Input InterfaceVibration Resistance