1. Product Overview
ZHEJIANG SIPUN ELECTRIC CO., LTD. presents the ST3-6/1X2 Twin Terminal Block, a robust and versatile electrical connection solution designed for high-current applications requiring reliable circuit branching and enhanced safety. This terminal block features a one-in, two-out (1X2) configuration, enabling a single power or signal source to be efficiently distributed to two separate circuits. Crucially, it incorporates an integrated equipotential bonding function, making it an ideal choice for demanding industrial environments where electrical safety, equipment protection, and organized, high-current wiring are paramount.
2. Technical Specifications
The table below details the core technical parameters of the ST3-6/1X2 terminal block:
| Parameter | Specification |
|---|---|
| Conductor Cross-Section | 0.5 mm² – 10.0 mm² |
| Rated Voltage | 1000 V AC/DC (Note: Typical rating for this class; please confirm final spec) |
| Rated Current | 41 A |
| Configuration | One-in, two-out (Twin), with equipotential bonding |
| Connection Technology | Spring-clamp (Push-in or Lever-actuated) |
| Mounting | Standard 35mm DIN Rail |
| Housing Material | High-strength, flame-retardant polymer (e.g., PA66, UL94 V-0 rated) |
| Standards Compliance | IEC 60947-7-1, IEC 60947-7-2, GB14048.7, GB14048.8 |
3. Applications and Usage
The ST3-6/1X2 is engineered for medium-to-high-current distribution within space-conscious panel designs.
- Power Circuit Branching: Perfect for splitting a main power feed (up to 41A) to supply two independent loads, motors, or subsystems from a single source point within a control cabinet or power distribution board.
- High-Density Industrial Panels: Its compact twin-level design saves valuable DIN rail space compared to using two separate single-level terminals for the same branching function, ideal for crowded PLC enclosures and motor control centers (MCCs).
- Safety-Critical Power Distribution: The integrated equipotential bonding feature is essential for applications where establishing a common, safe grounding potential for multiple devices or panels is required to protect personnel and prevent equipment damage from fault currents.
4. Key Features and Advantages
4.1. Integrated Equipotential Bonding for Enhanced Safety
This design includes a dedicated path for bonding conductors, connecting exposed conductive parts to prevent dangerous voltage differences.
- Personnel & Equipment Protection: Significantly reduces shock hazard and prevents damaging potential differences between connected metal parts or enclosures.
- EMI/RFI Mitigation: Provides a stable reference plane, helping to reduce electromagnetic interference in sensitive control circuits.
- Simplified Compliance: The built-in function facilitates adherence to electrical codes requiring reliable equipotential bonding, streamlining system design and installation.
4.2. High-Current Spring-Clamp Connection Technology
- Secure & Vibration-Resistant: The spring clamp mechanism ensures a constant, high-contact-force connection that remains secure under vibration and thermal cycling, superior to traditional screw terminals in demanding environments.
- Fast & Tool-Efficient Installation: Allows for quick insertion of prepared conductors (with or without ferrules), significantly reducing wiring time, especially beneficial for larger wire sizes (up to 10mm²).
- Maintenance-Free Reliability: The self-adjusting spring maintains optimal pressure over time, preventing loosening and ensuring long-term electrical integrity without retorquing.
4.3. Compact and Efficient Twin Design for 6mm² Class Wiring
- Space Optimization: Delivers two independent, high-current connection points in a single, compact housing, maximizing panel layout efficiency.
- Clear Circuit Organization: Keeps the branched power paths logically contained and visually organized within one terminal block, simplifying identification, testing, and maintenance.
5. Complete System Compatibility
The ST3-6/1X2 is part of a modular terminal block system and is fully compatible with a range of accessories from ZHEJIANG SIPUN ELECTRIC CO., LTD.:
- End Cover / Barrier: Cover ST3-6/1X2G provides finger-safe protection and meets required touch-protection standards.
- Bridging Components: Fork type Jumper FBS 10-8 enables the creation of common potential groups across adjacent terminal blocks horizontally.
- Identification: Marker ZB8 allows for clear, permanent, and professional circuit identification directly on the terminal block.
6. Quality Assurance
Manufactured by ZHEJIANG SIPUN ELECTRIC CO., LTD. under a stringent quality management system, the ST3-6/1X2 terminal block is designed and tested to deliver reliable performance in industrial applications. Compliance with international IEC and national GB standards guarantees that the product meets essential safety and performance criteria for global use.
Post time: Jan-05-2026