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Siemens ED63M020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Siemens
ED63M020
Molded Case Circuit Breaker
Brand
Siemens
SKU
ED63M020
Quantity
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Siemens ED63M020 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Built for extreme environments, this 20A MCCB features a specialized 50°C ambient calibration. It delivers precise thermal-magnetic protection for marine systems where standard 40°C breakers might nuisance trip. The ED-frame device mounts securely into Siemens panelboards, switchboards, and motor control centers. It serves as a specialized alternative to the standard ED63B020. Capable of handling 65kAIC at 240VAC, this HACR-rated breaker permits reverse feeding for flexible wiring.Specifications
| Brand | Siemens |
|---|---|
| Series | ED6 |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 30kA @ 250VDC |
| Frame Type | ED |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-10 AWG (Cu), 12-10 AWG (Al) |
| Max Wire | 10 AWG |
| Min Wire | 14 AWG (Cu) / 12 AWG (Al) |
| 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, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 50C |
| Construction Features | 50C Ambient Calibration, HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
7 answersWhich panelboards accept the ED63M020 circuit breaker?
This ED frame breaker is designed for Siemens Sentron panelboards, including P1, P2, and P3 series, as well as Siemens switchboards and motor control centers. It is also backward compatible with many legacy ITE panelboards that accept ED frame breakers.
Can I use an ED4 series breaker instead of the ED63M020?
It depends on your system voltage. ED4 breakers are limited to 480VAC maximum, whereas the ED63M020 is rated for up to 600VAC. If your system operates above 480V, you must use the ED6 series.
Is the ED63M020 suitable for direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for use in 250VDC systems with a 30kAIC interrupting capacity. This makes it suitable for specific industrial DC control or battery applications.
Are the trip settings adjustable on the ED63M020?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip functions are factory-set and cannot be adjusted in the field.
How is the ED63M020 installed in a panelboard?
This is a bolt-on circuit breaker, meaning it fastens directly to the busbar with screws or bolts rather than snapping into place. This provides a secure, high-vibration-resistant connection typical in industrial Siemens panelboards.
What wire sizes are accepted by the terminals on the ED63M020?
The factory-installed lugs accommodate 14 to 10 AWG copper wire or 12 to 10 AWG aluminum wire. Ensure you use the correct gauge based on your specific load and local electrical codes.
Can I install this Siemens breaker in a Square D or Eaton panel?
No. The ED63M020 is only UL listed for use in compatible Siemens or legacy ITE equipment. Installing it in another manufacturer's panelboard violates UL listings and creates a severe safety hazard.
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