New Original Schneider ZB4BZ102 ZB4 Normally Closed Contact Block
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New Original Schneider ZB4BZ102 Normally Closed Contact Block
1. Product Overview
ZB4BZ102 is an original complete contact assembly belonging to Schneider Electric Harmony ZB4/XB4 series industrial control components. It is a standard single normally closed (1NC) contact block pre-assembled with a metal mounting fixing collar and screw clamping terminals, specially matched with all XB4 series 22mm metal push buttons, selector switches and emergency stop actuatorsshop.steve….
This integrated unit combines silver alloy contact inserts and Zamak metal mounting base as one piece, adopting slow-break positive opening contact structure compliant with international safety standards. It serves as the core signal switching component for industrial control circuits, widely applied on machine tool operation panels, conveyor equipment control boxes, water pump & HVAC control cabinets and automated production lines to transmit stop signals, interlock feedback signals and fault cutoff commands to PLCs and relay control loops. The pre-installed metal collar enables direct quick locking onto 22mm panel cutouts without extra accessories, featuring strong vibration resistance and stable switching performance suitable for dusty, oily and fluctuating temperature industrial workshop environments.
2. Main Functions
- Normally Closed Signal Circuit Breaking Control
Under free unpressed status, the internal 1NC contact keeps the control circuit continuously conductive. When the matched push button head is pressed mechanically, the contact opens instantly to cut off the low-voltage control loop, realizing equipment stop, circuit interlock and safety cutoff command transmission.
- Positive Opening Safety Contact Design
Equipped with mandatory positive opening function in accordance with IEC 60947-5-1 Appendix K. Even if contact points are welded together due to overload current, mechanical structure can forcibly separate contacts, thoroughly guaranteeing safety cutoff for emergency stop circuits and safety interlock systems.
- Reliable Screw Clamp Wiring Connection
Cross-head screw terminals firmly clamp copper wires within specified wire gauge range; stable clamping force prevents wire loosening caused by long-term equipment vibration, effectively avoiding signal interruption and poor contact faults.
- Stackable Multi-Contact Expansion Compatibility
Multiple contact blocks can be stacked sequentially at the rear side of one button actuator to expand NO/NC contact quantity, meeting complex multi-channel logic control and dual signal feedback requirements for automation systems.
- Anti-Vibration & Harsh Environment Adaptation
Metal mounting collar and reinforced plastic housing resist mechanical shock, vibration, oil mist and dust erosion, maintaining consistent electrical performance during long-cycle continuous operation.
- Universal Compatibility with XB4 Series Full Range
Perfectly interchangeable with all XB4 command heads including momentary buttons, maintained buttons, rotary selector switches and emergency stop devices, supporting flexible on-site configuration adjustment.
3. Technical Characteristics
| Technical Parameter | Detailed Specification |
|---|---|
| Full Model | ZB4BZ102 |
| Product Series | Harmony ZB4/XB4 Contact Block Assembly |
| Contact Configuration | 1 NC (Normally Closed) Single Contact |
| Contact Material | Silver Alloy (Ag/Ni) |
| Contact Operation Mode | Slow-break, Positive Opening |
| Terminal Type | Screw Clamp Terminals |
| Applicable Wire Gauge | 0.22 ~ 1.5 mm² solid copper wire |
| Terminal Tightening Torque | 0.8 ~ 1.2 N·m |
| Rated Operational Current (AC15, 250V AC) | 6 A |
| Rated Insulation Voltage | 600 V |
| Mechanical Service Life | 5,000,000 operation cycles |
| Electrical Service Life | 1,000,000 operation cycles |
| Operating Ambient Temperature | -25 ℃ ~ +70 ℃ |
| Storage Temperature Range | -40 ℃ ~ +75 ℃ |
| Mounting Collar Material | Zamak Zinc Alloy |
| Overall Protection Grade | IP20 (Rear Side) |
| Compliance Standards | IEC 60947-5-1, UL, CSA, CCC, RoHS, REACH |
Core Technical Advantages
- Integrated contact block + metal collar one-piece structure greatly shortens on-site panel assembly time;
- Positive opening safety contacts satisfy machinery safety standard requirements for emergency stop control circuits;
- Silver alloy contacts feature anti-arcing performance, long service life under frequent switching;
- Compact stacked design saves internal panel wiring space;
- Multiple global safety certifications applicable to worldwide industrial automation projects.
4. Product Overall Dimensions & Weight
External Dimensions (Unit: Millimeter)
| Dimension Item | Exact Size |
|---|---|
| Total Width | 30 |
| Total Height | 47 |
| Total Depth | 37 |
Weight Parameters
| Weight Category | Specific Value |
|---|---|
| Single Unit Net Weight | 53 g |
| Original Packaged Gross Weight | 58 g |
5. 10 Schneider ZB4 Series Similar Contact Block Assemblies
All items belong to ZB4 integrated contact units with metal fixing collars for XB4 22mm buttons, screw terminal wiring and stackable structure; differences lie in contact combination and terminal type:
- ZB4BZ101 1NO Single Normally Open Contact Block, Screw Terminal
- ZB4BZ103 1NO+1NC Combined Contact Block, Standard Screw Terminal
- ZB4BZ104 2NC Double Normally Closed Contact Block
- ZB4BZ105 2NO Double Normally Open Contact Block
- ZB4BZ1024 1NC Contact Block, Faston Plug Terminal Version
- ZB4BZ1014 1NO Contact Block, Faston Connector Terminal
- ZB4BZ141 1NO+2NC Multi-Contact Combination Block
- ZB4BZ1025 1NC Push-In Spring Clamp Terminal Contact Block
- ZB4BZ1035 1NO+1NC Push-In Terminal Contact Module
- ZB4BZ106 1NO+1NC Low Current Gold-Plated Contact Block
WHO WE ARE
Sobre nosotros
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
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