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Siemens LMD63B700 Molded Case Circuit Breaker
- 700A
- 3 Pole
- Unit Mount
Siemens
LMD63B700
Molded Case Circuit Breaker
Brand
Siemens
SKU
LMD63B700
Quantity
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Siemens LMD63B700 - 700A 3 Pole Molded Case Circuit Breaker
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Description
Part of the Siemens Sentron family, this 700A LMD frame molded case circuit breaker provides reliable long-time and instantaneous (LI) protection for commercial and industrial electrical systems. It mounts into Siemens P4 and P5 panelboards, along with SB1, SB2, and SB3 switchboards. For modern upgrades, this unit is replaced by the 3VA5570-7EC36-0AA0 when using the appropriate retrofit kit. Rated for 65kAIC at 240VAC, it features an interchangeable trip unit and adjustable magnetic settings.Specifications
| Brand | Siemens |
|---|---|
| Part Number | LMD63B700 |
| Series | LMD6 |
| Amperage | 700A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 25kA @ 500VDC |
| Frame Type | LMD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards (P4, P5), Switchboards (SB1, SB2, SB3) |
| Wire Gauge | (3) 1/0 AWG - 500 kcmil (Al/Cu) |
| 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, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Line and Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhat enclosures or panels accept the LMD63B700 breaker?
This unit mount breaker is designed for installation in Siemens Sentron P4 and P5 panelboards, as well as SB1, SB2, and SB3 switchboards. It requires the appropriate mounting strap kit for your specific panel configuration.
What are the wire size limits for the standard lugs on this breaker?
The factory lugs accommodate three 1/0 AWG to 500 kcmil conductors per phase. The terminals are dual-rated for either copper or aluminum wire.
How does the trip unit operate on the LMD63B700?
It utilizes a thermal-magnetic trip mechanism. The thermal element provides fixed long-time overload protection, while the magnetic element offers an adjustable instantaneous trip setting to allow for precise coordination with downstream equipment.
Can this breaker replace an older I-T-E LMD63B700?
Yes. Siemens acquired I-T-E and continued manufacturing the Sentron line. A modern Siemens LMD63B700 is a direct drop-in replacement for an older I-T-E branded breaker with the exact same catalog number.
Is this breaker suitable for direct current (DC) systems?
Yes, the LMD63B700 is rated for use in DC systems up to 500VDC. When applied in a 500VDC circuit, it provides an interrupting rating of 25kA.
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