Outline of EVS Series Low-Voltage Circuit Breakers
High-Standard Environmental Adaptability
The EVS series low-voltage circuit breakers feature exceptional environmental adaptability, ensuring stable operation of power distribution systems under drastic environmental changes or harsh conditions, such as:
- Building applications in substation cabinets,
- Underground distribution rooms without air conditioning,
- Confined installation spaces.
Key Features:
● Compliance with IEC 68-2 environmental testing standards (exceeding OCC test requirements):
- Operating temperature range: -5°C to +70°C
- Suitable for extreme atmospheric conditions.
● Rated for
Pollution Degree 3 and 4 (per IEC 60664-1):
- Designed for general or severe industrial environments.
● Stable operation at
up to 95% humidity.
Long-Term Operational Reliability
The EVS series is engineered for sustained performance and maintenance-free operation, significantly reducing daily maintenance efforts in low-voltage power distribution systems.
- Maintenance-Free Design: Integrated core components minimize insulation and connection failures.
- Arc-Guiding Main Contacts: Proprietary design reduces contact wear, enhancing lifespan and operational stability.
Zero Arc Flash Technology for Safe Operation
The patented arc-extinguishing chamber design ensures safety across all operating conditions:
- Constructed with stainless steel plates and specialized arc grids to absorb energy during interruption.
- Filters and cools gases, reducing internal arc pressure and external hazards.
- EVS H-Type Arc Chamber: Replaces filters with a unique airflow channel design, maintaining zero arc flash while ensuring safe interruption.
- Protects personnel and enhances system safety.
Reliable Racking Locking Mechanism
Multiple locking options prevent misoperation:
- Breaker "OFF" position lock,
- Racking "Disconnected" position lock,
- Open/close button locks,
- Door interlocks (mechanical and standard),
- Three-Lock, Two-Key System: Ensures secure protection across low-voltage circuits.
Enhanced Operator Safety
- Standard safety shields prevent contact with live busbars.
- Built-in door frames improve cabinet protection ratings.
Simplified Configuration for Diverse Applications
- 10 Current Ratings and 2 Breaking Capacities:
- N-Type: Ideal for residential, commercial, and small/medium industrial systems (400–1600A).
- H-Type: Suited for high-capacity transformers or parallel systems (630–4000A).
- Ics=100% Icu: Full short-circuit breaking capacity allows continued operation post-fault without component replacement.
Flexible Installation Options
Optimized for standard cabinets with space-saving features:
- Top or bottom cable entry,
- No safety clearance required,
- Horizontal/vertical rear connections or hybrid configurations,
- Minimal pole spacing of 70mm,
- Modular rear terminals enable on-site horizontal/vertical adjustments*
*EVS4000H rear terminals are fixed (non-interchangeable).
Environmental Considerations
Schneider Electric prioritizes sustainability throughout the product lifecycle:
- Materials pose no environmental risks,
- ISO 14001-compliant manufacturing processes,
- Eco-friendly filtered metal covers prevent contamination,
- Recyclable and reusable components.
Future-Ready Upgradability
Adapts to evolving system demands:
- Replaceable control units for seamless upgrades,
- Expandable cabinet designs to accommodate load growth.
Product Overview
- Scope:
- N-Type: 400–1600A (3/4 poles, fixed/drawout versions).
- H-Type: 630–4000A (3/4 poles, fixed/drawout versions).
- Key Specifications:
- Only 2 frame sizes,
- Derating protection capabilities.