Siemens CMD63B600L Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Quantity
Siemens CMD63B600L - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for heavy-duty industrial applications, the Siemens CMD63B600L delivers 600A of 3-pole protection using thermal-magnetic trip technology. This unit mounts into Sentron P4 and P5 panelboards or enclosures and comes complete with TA3K500 line and load lugs for immediate wire termination. It seamlessly replaces older MD63B600 models. As a fuseless current-limiting MD frame breaker, it achieves a robust 100 kAIC rating at 480VAC to protect downstream equipment from high fault currents.Specifications
| Brand | Siemens |
|---|---|
| Part Number | CMD63B600L |
| Series | CMD6 |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 65kA @ 600VAC, 50kA @ 250VDC, 25kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron P4, P5 Panelboards, Switchboards, Enclosures |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 1/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Includes Line & Load Lugs (TA3K500) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated, Non-Interchangeable Trip |
Product FAQs
5 answersWhich panelboards are compatible with the CMD63B600L circuit breaker?
This MD frame breaker is designed for installation in Siemens Sentron P4 and P5 panelboards, as well as compatible Siemens switchboards and enclosures.
What wire sizes do the standard lugs on the CMD63B600L accept?
The included line and load lugs accept up to three 1/0 AWG to 500 kcmil copper or aluminum conductors per phase.
What does the fuseless current limiting designation mean for this breaker?
A current limiting breaker clears short circuits fast enough to significantly reduce let-through energy, protecting downstream equipment. This allows the CMD63B600L to achieve high interrupting ratings, like 200kA at 240V AC and 100kA at 480V AC, without the need for internal fuses.
Can the trip settings on the CMD63B600L be adjusted?
Yes, this thermal magnetic breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element. This allows electricians to fine-tune the instantaneous short-circuit trip response for specific load requirements.
Can the CMD63B600L replace older ITE branded breakers?
Yes, this Siemens Sentron breaker serves as a direct replacement for legacy ITE CMD6 series and MD frame breakers with the exact same catalog number, requiring no panel modifications.
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