Overview
The Siemens ED63B020 is a compact molded case circuit breaker from the Sentron Series, engineered for industrial and commercial electrical systems. Rated for 20A at 600V with 3-pole configuration, this breaker delivers thermal-magnetic overcurrent protection with a standard interrupting capacity of 18kA at 600VAC. The ED frame design offers space-efficient panel mounting and lug terminal connections for quick installation and reliable circuit protection in demanding applications.
Key Features
- Thermal-magnetic trip mechanism for fast response to overloads and short circuits
- Non-interchangeable trip unit ensures secure, consistent protection
- Compact ED frame design optimized for space-constrained panel layouts
- Load-side lug terminals (feed-through capable) for flexible conductor range accommodation
- Standard 40°C calibration suitable for most industrial control and power distribution applications
- UL 489 and CE certified for North American and international compliance
Technical Specifications
The ED63B020 meets rigorous performance and safety standards with fuseless current-limiting design to protect downstream equipment:
- Voltage Rating: 600VAC / 500VDC
- Current Rating: 20A per pole
- Poles: 3 (3-phase)
- Interrupting Capacity: 18kA @ 600VAC, 25kA @ 480VAC, 65kA @ 240VAC
- Operating Temperature: Calibrated at 40°C
- Wire Size Range: 14–10 AWG (copper), 12–10 AWG (aluminum)
- Terminal Type: Load-side lug (bolt-on)
- Dimensions: 3.00″ W × 6.35″ H × 4.56″ D
- Frame Type: ED (ED6 variant)
- Trip Unit: Thermal-magnetic (non-interchangeable)
- Certifications: UL 489, CE
Typical Applications
This circuit breaker is ideal for:
- Industrial control panels and motor starter circuits
- Commercial lighting and distribution systems
- HVAC equipment protection and feeder circuits
- Backup generator and UPS systems
- Equipment replacement and retrofit installations where ED frame compatibility is required
Compatibility & Replacements
The Siemens ED63B020 is a direct replacement for legacy ITE and Siemens ED-frame breakers with identical electrical and mechanical ratings. The 3-pole, 20A, 600V configuration matches many industrial standard breaker requirements. When substituting, verify that your panel frame and lug arrangement support ED-series breakers. This molded case breaker is not interchangeable with mini-circuit breaker (MCB) or DC-rated variants—confirm voltage, current, and pole count before installation. For applications requiring higher interrupting capacity or different trip characteristics, consult Siemens technical specifications or your systems integrator.
