Technical Specifications

• Model: LQPSC 0.38KV/1000A

• Phase Configuration: Single-phase

• Frequency: 50Hz

• Rated Voltage: 0.38kV (380V AC)

• Rated Current: 1000A

• Control Voltage: AC 220V

• Protection Rating: IP20

• Protection Type: Universal circuit breaker

• Installation: Indoor use only

Core Protection Features

• Universal Circuit Breaker: Primary protection device

• Under-Voltage Tripping: Automatic main circuit interruption during control voltage loss

• Over-Voltage Protection: System safeguards against voltage surges

• Over-Current Protection: Prevents equipment damage from current overloads

• Isolation Capability: Physical circuit separation for maintenance safety

Operational Capabilities

• Remote Operation: Switchgear control via external signals

• Local Operation: Manual control at cabinet

• Status Indication: Visual confirmation of switch positions

• Safety Interlocking: Prevents unsafe operating conditions

Universal Circuit Breaker Advantages

Industrial Applications

• Industrial manufacturing power distribution

• Large commercial building main switchboards

• Water treatment plant electrical systems

• Power generation auxiliary systems

• Industrial process control centers

Safety Mechanisms

• Automatic Under-Voltage Trip:

• Activates when control circuit voltage fails

• Disconnects main circuit within 500ms

• Visual Isolation Verification: Clear break indication

• IP20 Protection: Prevents finger contact with live parts

• Arc Containment: Designed to channel arc gases safely

Installation Requirements

• Mounting: Floor-standing with vibration dampeners

• Clearances:

• Front: 1000mm minimum

• Rear: 400mm minimum

• Environmental Conditions:

• Temperature: -5°C to +40°C

• Humidity: ≤85% RH (non-condensing)

• Altitude: ≤2000m ASL

• Power Connections: 2× 240mm² per phase minimum

Maintenance Protocol

1. Monthly:

• Visual inspection of circuit breaker position

• Verify indicator lamp functionality

2. Quarterly:

• Operation counter check

• Control voltage verification

3. Biannual:

• Insulation resistance measurement

• Under-voltage trip test

4. Annual:

• Circuit breaker contact resistance test

• Protection relay calibration

Compliance Standards

• IEC 60947-2: Circuit-breakers

• IEC 61439-1: Low-voltage switchgear assemblies

• IEC 62271-200: AC metal-enclosed switchgear

• ISO 9001: Quality management systems

Certified for industrial power distribution with universal circuit breaker protection.