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The SZD11-32/30001F is a three-phase (3P) manual load disconnector with a rated current of 32A, designed for panel mounting. Its core safety feature is an integrated green push-pull mechanical latch. When the switch is in the "OFF" position, pushing it inward exposes the latch hole, allowing for locking with a standard padlock (supplied by the user). This effectively prevents unauthorized operation or accidental activation, complying with safe operating procedures. The latch can be pushed to expose the latch hole, enabling users to physically lock it with a standard padlock, effectively preventing unauthorized operation or accidental closing, strictly complying with safety lockout (LOTO) specifications during equipment maintenance. This product features a large insulation distance and fast breaking capacity, specifically designed for three-phase power circuits requiring high safety levels of operation.
1. Main Technical Specifications and Characteristics
Rated Values: Rated operating current 32A, Rated operating voltage AC 440V, 50Hz.
Compliant Standards: GB/T 14048.3, IEC 60947-3.
Number of poles and function: Three-pole (3P). Two-position (ON/OFF) operation of the handle:
ON position: All three-phase main contacts (T1-L1, T2-L2, T3-L3) are reliably connected.
OFF position (lockable): All main contacts are completely disconnected, providing a safe electrical isolation point. In this position, the green push-pull latch can be activated; pushing it exposes the lock hole, allowing the user to attach a padlock for locking.
Safety features:
Push-pull latch: Intuitive and simple operation, reliable locking, a key design for achieving mandatory safety isolation.
Insulation and disconnection: Greater insulation distance and faster disconnection speed than comparable products ensure operational safety.
Wiring capability: M3.5 wiring screw specification, applicable conductor cross-sectional area 2.5 – 6.0 mm², recommended tightening torque 0.8 N·m.
Lifespan Specifications (Rated Duty: 8-hour duty/Intermittent duty, operating frequency ≤ 30 times/hour):
Electrical Life (AC-23): ≥ 10,000 cycles
Electrical Life (AC-3): ≥ 6,000 cycles
Auxiliary Contact Life: ≥ 2,000 cycles
Installation Method: Panel mounted.
Operating Conditions: Ambient temperature -25°C to +40°C, altitude ≤ 2000m, adaptable to normal industrial environmental humidity.
2. Application Scenarios
This switch is designed for industrial and commercial three-phase equipment requiring manual on/off switching, reliable isolation, and mandatory safety lockout procedures.
Equipment Maintenance Safety Main Switch: Serves as the main power isolation switch for equipment such as fans, air conditioners, water pumps, and small production lines. Its push-pull lockout design is ideal hardware for implementing the lockout-to-tag (LOTO) safety procedure, ensuring that power cannot be accidentally switched on during maintenance.
For power distribution circuits with stringent safety requirements: Installed on the control cabinet or distribution box panel, it serves as an isolating switch for branch power circuits (≤32A) requiring authorized operation, preventing accidental operation by unauthorized personnel.
Direct control and safety isolation: Used for direct control of small-capacity three-phase motors with infrequent operation, providing a lockable safety disconnect point during equipment commissioning and maintenance.
High-safety locations: Suitable for workshops, laboratories, educational facilities, and other locations with strict operational safety controls, providing an intuitive and reliable physical locking function.
