Overview
The I-T-E EH1-B020 is a thermal magnetic molded case circuit breaker engineered for reliable overcurrent protection in single-phase distribution systems. With a 20-ampere rating at 277VAC, this breaker combines dependable thermal-magnetic trip elements to protect against both overloads and short-circuit conditions. The EH series frame accommodates amperage ratings from 15A to 150A, making it a versatile solution for retrofit and replacement applications in industrial, commercial, and utility installations.
Key Features
- Thermal-magnetic protection against overloads and short circuits
- Bolt-on connection type for secure mounting in electrical panels
- Long-time and instantaneous trip functions (LI)
- 10kA interrupting capacity at 277VAC (standard breaking capacity)
- Designed for operating temperatures up to 40°C
- Complies with UL standards and RoHS requirements
Technical Specifications
The EH1-B020 breaker meets established performance standards for molded case designs, with specifications verified across multiple industrial distributors:
Typical Applications
The I-T-E EH1-B020 is suited for single-pole circuit protection in commercial and light industrial environments, particularly where 277VAC single-phase protection is required. Common applications include:
- Commercial lighting and receptacle circuits
- Light industrial motor starters and control circuits
- Electrical panel retrofits and replacements
- HVAC and building systems protection
- Utility and distribution panel installations
Compatibility & Replacements
Compatible With
- Standard bolt-on molded case breaker panelboards rated for EH frame size
- 277VAC single-phase electrical distribution systems
- Industrial control panels and industrial equipment
- Commercial electrical infrastructure
Replaces / Drop-In Replacement For
- Siemens EH1B020 (part number variants with equivalent ratings)
- ITE Gould EH series 1-pole 20A breakers
- Other thermal magnetic molded case breakers rated 1P 20A 277VAC with standard breaking capacity
Works With
- Bolt-on panelboards and distribution equipment
- Standard electrical control systems and protective relay schemes
- 277VAC single-phase power distribution networks
- Thermal-magnetic overcurrent protection coordination schemes
