Siemens E63B020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Quantity
Siemens E63B020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered for commercial use, the Siemens E63B020 is a 3-pole, 20A molded case circuit breaker providing long-time and instantaneous (LI) protection. This unit-mount breaker fits Siemens P1, P2, and P3 panelboards. As a legacy E-Frame component, it supports existing setups and is officially replaced by the ED63B020 model. Rated for 65kAIC at 240VAC, it features a fixed thermal-magnetic trip unit and carries an HACR rating for specialized HVAC applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | E63B020 |
| Series | E63B |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 30kA @ 250VDC |
| Frame Type | E6 |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Reverse Feed |
Product FAQs
6 answersWhich Siemens panelboards are compatible with the E63B020 circuit breaker?
This E6 frame breaker is designed for use in Siemens P1, P2, and P3 panelboards. It requires the appropriate mounting hardware kit for bolt-on installation in these specific panels.
What wire sizes are accepted by the lugs on this 20A breaker?
The factory-installed lugs accept 14 to 10 AWG copper wire or 12 to 10 AWG aluminum wire. Ensure proper torque specifications are followed during installation to prevent terminal overheating.
Can the E63B020 be used in DC applications?
Yes, this breaker is rated for up to 250VDC with a 30kA interrupting capacity. It is suitable for direct current applications requiring a 3-pole thermal magnetic trip unit.
Are the trip settings adjustable on the E63B020?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous protection without adjustable dials.
How does the E63B020 mount into the panel?
This is a unit mount, bolt-on circuit breaker. It secures directly to the panelboard bus or mounting pan using bolts, rather than snapping into place like a plug-in breaker.
What is the recommended practice for terminating aluminum wires on this breaker?
When using 12 to 10 AWG aluminum conductors, apply an oxide-inhibiting compound to the stripped wire before insertion. Tighten the lugs to the manufacturer specified torque listed on the breaker faceplate to ensure a safe connection.
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