Overview
The ITE EH1-B020 circuit breaker is a single-pole thermal magnetic molded case unit designed for reliable overcurrent and short-circuit protection in electrical distribution systems. This 1-pole thermal magnetic molded case circuit breaker carries a current rating of 20 Amps and a voltage rating of 277VAC. The breaker features thermal magnetic protection with long-time and instantaneous trip functions and is rated for an interrupting capacity of 10kAIC at 277VAC. Each unit in this lot of four has been tested and inspected for full functionality.
Key Features
- Single-Pole Design: 1-pole EH series configuration for single-phase circuit protection
- Thermal Magnetic Protection: Long-time and instantaneous trip functions protect against overloads and faults
- Bolt-On Connection: Bolt-on connection type enables secure mounting to breaker panels
- Molded Case Construction: Durable thermoplastic housing for industrial environments
- Lot of Four Units: Cost-effective multi-unit purchase for parallel circuit protection or system redundancy
Technical Specifications
The following specifications define the operational requirements and compatibility of this breaker:
- Amperage Rating: 20A (continuous)
- Voltage Rating: 277VAC
- Poles: 1-pole (single-phase)
- Type: Molded case circuit breaker (MCCB)
- Frame Series: EH
- Protection Class: Thermal magnetic
- Trip Functions: Long-time (LI) and instantaneous
- Interrupting Rating (AIC): 10kA @ 277VAC
- Connection Type: Bolt-on
- Manufacturer: Siemens / ITE Gould
Typical Applications
The ITE EH1-B020 is well-suited for:
- Industrial control panels and motor starters requiring single-phase 277VAC protection
- Lighting and HVAC circuits in commercial buildings
- Manufacturing equipment with bolt-on breaker requirements
- Replacement breakers for legacy electrical systems using EH-series designs
- Emergency backup or redundant protection systems requiring spare units
Compatibility & Replacements
Compatible With
- Siemens / ITE EH-series electrical panels and enclosures
- Standard single-phase 277VAC distribution systems
- Bolt-on breaker mounting rails in NEMA-rated panels
- Industrial control and automation systems requiring 20A load protection
Replaces / Drop-In Replacement For
- Part Number: EH1B020 (alternate format without hyphen)
- Other single-pole 20A 277VAC molded case breakers with identical bolt-on footprint and frame dimensions
- Verify exact compatibility with your panel manufacturer before installation
Works With
- Industrial electrical panels rated for 277VAC single-phase service
- Breaker load calculations and NFPA 70 (National Electrical Code) compliance
- Standard industrial protective relay and overload schemes
- Thermal magnetic coordination curves used in electrical system design
