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Siemens MXD63B700 Molded Case Circuit Breaker
- 700A
- 3 Pole
- Unit Mount
Siemens
MXD63B700
Molded Case Circuit Breaker
Brand
Siemens
SKU
MXD63B700
Quantity
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Siemens MXD63B700 - 700A 3 Pole Molded Case Circuit Breaker
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Description
Operating within the Sentron MD frame family, the MXD63B700 is a 700A, 3-pole molded case circuit breaker designed for heavy-duty industrial use. It provides essential Long-Time and Instantaneous (LI) protection through a reliable thermal-magnetic trip unit. This unit-mount breaker is engineered to fit Siemens S4 and S5 panelboards, SB1-SB3 switchboards, and motor control centers. It boasts a 65kAIC rating at 240VAC and features an adjustable magnetic trip range from 4000A to 8000A.Specifications
| Brand | Siemens |
|---|---|
| Part Number | MXD63B700 |
| Series | MXD6 |
| Amperage | 700A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Sentron Panelboards (Type S4, S5), Switchboards (SB1, SB2, SB3), Motor Control Centers |
| 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, Lugs |
|---|---|
| Accessories | Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
7 answersWhat enclosures and panels are compatible with the MXD63B700?
This breaker is designed for use in Siemens Sentron panelboards (Type S4, S5), switchboards (SB1, SB2, SB3), and motor control centers that accept MD Frame breakers.
Does the MXD63B700 come with lugs installed?
No, the MXD63B700 is typically supplied without lugs. Compatible lug kits, such as the 3TA3N8750 for 500 to 750 kcmil conductors, must be purchased separately depending on your wire size and material requirements.
Can the MXD63B700 be reverse fed?
Yes. Because the MXD63B700 features a non-interchangeable trip unit, it complies with UL 489 requirements for reverse feeding. Breakers in this family with interchangeable trip units cannot be reverse fed.
What does the LI trip function code mean on this breaker?
The LI designation indicates that the thermal-magnetic trip unit provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection. The thermal element is fixed, while the magnetic instantaneous trip is adjustable.
What is the difference between the MXD63B700 and the HMXD63B700?
The primary difference is the interrupting capacity. The MXD63B700 has a standard interrupting rating of 50kA at 480V, while the HMXD63B700 is a high-interrupting version rated for 65kA at 480V.
What does the X in the MXD6 prefix indicate?
The X indicates that the breaker comes factory assembled with a non-interchangeable trip unit. This complies with specific UL requirements for applications where the trip unit must not be removable.
Does the MXD63B700 provide ground fault protection?
No, this is a standard thermal-magnetic breaker with Long-Time and Instantaneous (LI) protection only. It does not include integral ground fault (G) or short-time (S) protection.
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