Overview
The Siemens HED63B020 is a Type HHED6 molded case circuit breaker from the proven Sentron series. With a 20A current rating and 600VAC maximum voltage, this 3-pole breaker delivers thermal-magnetic protection in a bolt-on ED frame design. It is commonly found in legacy Siemens P1, P2, and P3 panelboards and switchboards used across industrial electrical distribution systems.
Key Features
- 3-pole configuration for full phase protection and simultaneous disconnection
- Thermal-magnetic trip mechanism for reliable fault detection
- Bolt-on mounting compatibility with Siemens P-series panelboards
- Compact ED frame design built for demanding industrial environments
- Complete with load-side lug terminals (wire range 10–1/0 AWG copper/aluminum)
Technical Specifications
This breaker meets UL 489 and CSA 22.2 standards and is suitable for 40°C continuous operation. The interrupting capacity varies by voltage: 100 kA at 240VAC, 65 kA at 480VAC, and 18 kA at 600VAC. Standard ED frame dimensions are 3.0″ W × 6.5″ H × 3.92″ D.
Typical Applications
The Siemens HED63B020 is ideal for:
- Legacy industrial control panels and switchboards
- Machinery protection circuits requiring 20A at 600V or lower
- Retrofit and replacement applications in existing Siemens installations
- Commercial HVAC, lighting, and power distribution systems
Compatibility & Replacements
This unit is compatible with Siemens P1, P2, and P3 panelboard frames. For modern upgrades, Siemens offers the 3VA5120-6ED31-0AA0 as a successor model, though a specific mounting kit is required for panelboard integration. The HHED63B020 remains a standard repair/restoration part for plants relying on legacy Sentron equipment. This used unit is fully tested and ready for immediate deployment.
