Zinsco / Sylvania SJK3C600 Molded Case Circuit Breaker
- 600A
- 3 Pole
- Bolt-On
Quantity
Zinsco / Sylvania SJK3C600 - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving as a critical component for older facilities, this 600-amp molded case breaker ensures reliable three-phase power distribution. It mounts into classic Challenger, Sylvania, and Westinghouse enclosures to maintain existing electrical systems. Facility managers looking for current-generation alternatives can use the Eaton LD3600, provided the appropriate retrofit kit is applied. Delivering 30kAIC at 480V, it requires separate lug kits for wire termination.Specifications
| Brand | Zinsco / Sylvania |
|---|---|
| Part Number | SJK3C600 |
| Series | SJK |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC |
| Frame Type | SJK |
|---|---|
| Terminal Type | Lugs |
| For Use With | Sylvania Panelboards, Challenger Panelboards, Westinghouse Panelboards, Eaton Panelboards |
| Wire Gauge | (2) 250-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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 | Lugs Not Included |
| Standards | UL 489, NEMA AB 1 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | Interchangeable Trip Unit |
Product FAQs
5 answersWhich legacy panelboards accept the SJK3C600 circuit breaker?
This bolt-on breaker is designed to maintain existing electrical systems and mounts directly into classic Sylvania, Challenger, Westinghouse, and compatible Eaton panelboards that utilize the SJK frame.
What is the modern Eaton equivalent for the Sylvania SJK3C600?
Facility managers looking for a current generation alternative can use the Eaton LD3600. Note that installing the LD3600 in place of an SJK frame requires the appropriate retrofit kit.
What are the wire size requirements for terminating the SJK3C600?
The breaker accepts dual conductors per phase. The terminals are rated for either aluminum or copper wire ranging from 250 kcmil to 500 kcmil.
How is the trip unit configured on the SJK3C600?
It is equipped with a thermal magnetic trip unit that provides fixed thermal protection for long-time overloads and an adjustable magnetic setting for instantaneous short-circuit protection.
What are the maximum fault current ratings for the SJK3C600 across different voltages?
While commonly rated for 30kAIC at 480VAC, the breaker is also fully rated to handle 65kAIC at 240VAC and 22kAIC at its maximum operating voltage of 600VAC.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.