Eaton / Challenger SJK2F600 Molded Case Circuit Breaker
- 600A
- 2 Pole
- Bolt-On
Quantity
Eaton / Challenger SJK2F600 - 600A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Supplying robust power distribution for demanding facilities, this two-pole 600A molded case breaker handles up to 65kA fault currents at 240VAC. The J-Frame footprint ensures exact compatibility with classic Challenger panelboards and motor control centers. Equipped with adjustable magnetic trip settings for tailored defense, this unit serves as a critical maintenance component and is commonly associated with the LD2600 upgrade path for long-term system reliability.Specifications
| Brand | Eaton / Challenger |
|---|---|
| Part Number | SJK2F600-R |
| Series | SJK |
| Amperage | 600A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 30kA @ 480VAC, 18kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Challenger Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 2 x 1 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 1 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, Lug Kits |
|---|---|
| Accessories | SJK2F600 |
| Standards | UL 489, NEMA AB 1 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | HACR Rated, Interchangeable Trip Unit |
Product FAQs
5 answersWhat equipment is the Challenger SJK2F600 designed to fit?
This J-frame breaker is engineered for legacy Challenger and Sylvania panelboards, switchboards, and motor control centers that are configured for bolt-on SJK-series breakers.
What are the lug wire size requirements for this 600A breaker?
The terminal lugs are designed to accept two conductors per pole. Each lug accommodates 1 AWG to 500 kcmil aluminum or copper (Al/Cu) wire.
What does the LI trip function code mean on the SJK2F600?
The LI designation indicates a thermal-magnetic trip unit providing Long-Time (fixed thermal) protection against overloads and Instantaneous (adjustable magnetic) protection against short circuits.
Can I use the SJK2F600 to replace a Sylvania breaker with the same catalog number?
Yes, Challenger and Sylvania shared manufacturing for the SJK series. An SJK2F600 breaker branded as Challenger is a direct, exact replacement for a Sylvania SJK2F600.
What safety precautions are required when installing dual 500 kcmil conductors on this breaker?
When terminating parallel conductors (2 x 1 AWG to 500 kcmil) per phase, ensure both wires are of the same material, length, and cross-sectional area to prevent unequal current sharing and localized overheating at the lugs.
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