Siemens / ITE LM3B225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Quantity
Siemens / ITE LM3B225 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Delivering proven overcurrent protection, the Siemens LM3B225 functions as a 225A, 3-pole MCCB rated for 600VAC. It features a thermal magnetic trip that provides long-time and instantaneous protection for commercial facilities. Designed to integrate into Siemens P4 and P5 panelboards, this LMD-Frame breaker utilizes a secure bolt-on mount. It serves as a legacy replacement for aging infrastructure and is superseded by the JD63B225. Boasting a 50kAIC capacity at 480VAC, it is UL 489 listed.Specifications
| Brand | Siemens / ITE |
|---|---|
| Part Number | LM3B225-R |
| Series | LM |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC, 30kA @ 250VDC, 25kA @ 500VDC |
| Frame Type | LM |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P4, P5 Panelboards, Switchboards |
| Wire Gauge | 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, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits, Padlock Attachment |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit, HACR Rated |
Product FAQs
5 answersWhich panelboards are compatible with the LM3B225 circuit breaker?
This bolt-on breaker is designed for use in Siemens P4 and P5 panelboards, as well as compatible Siemens switchboards.
What wire sizes are accepted by the standard lugs on this breaker?
The standard lugs accept wire gauges from 1/0 AWG up to 500 kcmil. They are rated for use with both aluminum and copper conductors.
Does the LM3B225 feature an adjustable trip setting?
Yes, it features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
Are Siemens and ITE LM3B225 breakers interchangeable?
Yes. Siemens acquired ITE, and the LM frame breakers manufactured under both brand names share the exact same physical dimensions, mounting style, and electrical characteristics.
Can this breaker be used in DC voltage applications?
Yes, it is rated for DC applications up to 500VDC. It provides a 30kA interrupting capacity at 250VDC and a 25kA interrupting capacity at 500VDC.
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