Siemens JL3F400 Molded Case Circuit Breaker Frame Only
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Siemens JL3F400 - 400A 3 Pole Molded Case Circuit Breaker Frame Only
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Description
The Siemens JL3F400 is a circuit breaker frame with a 400A frame amperage and three poles. This JL3F series J-Frame has voltage ratings of 600VAC and 250VDC. Its interrupting ratings are 42kA at 240VAC, 30kA at 480VAC and 22kA at 600VAC. The frame uses bolt-on mounting and weighs 12 lb. The trip unit is not included; this is a frame-only product.Specifications
| Mounting Type | Bolt-On |
|---|---|
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Poles | 3 |
| Series | JL3F |
| Amperage | 400A |
|---|---|
| Phase | 3 |
| Interrupting Rating | 42kAIC at 240VAC, 30kAIC at 480VAC, 22kAIC at 600VAC |
| Connection Type | Bolt-On |
|---|---|
| Terminal Connection | Lugs |
| Brand | Siemens |
|---|---|
| MPN | JL3F400-R |
Product FAQs
5 answersWhat voltage ratings should I use when selecting this frame?
The Siemens JL3F400 is rated 600VAC and 250VDC. Use the rating for the circuit's current type and ensure the system voltage does not exceed it.
How do I evaluate the interrupting rating for an AC installation?
The interrupting ratings are 42kA at 240VAC, 30kA at 480VAC, and 22kA at 600VAC. Compare the available fault current at the installation point with the rating at the applicable voltage; it must not exceed that interrupting rating.
When should I choose a three-pole frame?
Use the three-pole configuration when the circuit design calls for interrupting three circuit conductors. Pole count is a separate selection requirement from amperage and voltage.
What does bolt-on mounting mean for installation planning?
Bolt-on mounting requires a bolted installation rather than a plug-in mounting method. Plan the installation work around securing the frame with bolted mounting.
What does the 400A rating mean for frame selection?
The Siemens JL3F400 has a 400A frame amperage. Use 400A to select the amperage class and J-Frame to select the physical frame size.
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