Siemens MXD63B500 Molded Case Circuit Breaker
- 500A
- 3 Pole
- Unit Mount
Quantity
Siemens MXD63B500 - 500A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built for circuit protection, the Siemens MXD63B500 molded case circuit breaker uses thermal magnetic tripping for overload and short-circuit protection. It has a rated current of 500A, a 600VAC rating, 3 poles and 3-phase operation. This Sentron series breaker has an MD frame and bolt-on terminal connections. Long-time and instantaneous trip functions provide standard protection. Its interrupting rating is 50kAIC at 480V.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MXD63B500 |
| Series | MXD6 |
| Amperage | 500A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 50kA @ 480VAC |
| Frame Type | MD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (Type S4, S5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| 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 | Alarm Switch, Auxiliary Switch, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat circuit voltage should I consider for the Siemens MXD63B500?
The 600VAC rating guides selection for AC circuits operating at or below that voltage. Evaluate interrupting capacity separately at the circuit's operating voltage.
How do I evaluate this breaker against available fault current at 480V?
Its interrupting rating is 50kAIC at 480V. For a 480V installation, the available fault current must not exceed that interrupting rating.
How does the thermal-magnetic LI trip protect the circuit?
The thermal-magnetic trip provides long-time and instantaneous protection. Long-time operation responds to sustained overloads, while instantaneous operation responds to high fault current without an intentional delay.
How should I account for the breaker's width during layout?
Use the 8.25 in width when planning the breaker's physical footprint. Account separately for the space needed to route conductors and perform termination work.
What does the bolt-on terminal connection mean for installation?
The terminal connection uses bolted electrical joints. Plan termination work around securing those joints with appropriate tools and fastening practices.
How should I use the phase and pole count when planning conductor connections?
The Siemens MXD63B500 has a three-phase, three-pole configuration. Use both the phase arrangement and pole count when planning the circuit's conductor connections.
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