Electric Knife Switch

- Industrial Power Isolation: Primary manual disconnect for maintenance circuits (e.g., rolling mill control cabinets).  

- Motor Emergency Shutdown: HS series for backup power switching to ensure uninterrupted production.  

- Furnace Control: Direct switching of resistive loads (≤ rated current), reducing wear on circuit breakers.  

- PV DC Isolation: Custom DC models for solar array maintenance (DC 1000V, 200A).  

1. Installation  

  - Mount vertically on panels with fixed contacts (power source) above and moving contacts (load) below. Horizontal mounting prohibited.  

  - Busbar torque: 80N·m for 1000A models (use lock washers).  

2. Operation  

  - Close: Grip handle and push steadily to ON until full blade engagement.  

  - Open: De-energize load first, then swiftly pull handle to OFF to enhance arc extinction via airflow.  

Q1: Can this replace a circuit breaker?  

A: No. It lacks overload/short-circuit protection; use with fuses or breakers.  

Q2: HD vs. HS series selection?  

A: HD for single-source isolation; HS for dual-source switching (e.g., backup generators).  

Q3: Risks of horizontal mounting?  

A: Blade sagging, poor contact, and delayed arc extinction may cause fire hazards.  

Q4: Suited for frequent operation?  

A: Not recommended. Rated for ≤5 daily cycles; use load switches for high-frequency needs.