Challenger / Sylvania / Zinsco SF3C100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Quantity
Challenger / Sylvania / Zinsco SF3C100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Engineered to support legacy power distribution, this 100A thermal-magnetic breaker ensures continued operation of aging commercial facilities. It delivers reliable three-phase protection for industrial loads. This component fits seamlessly into classic Zinsco, Sylvania, and Challenger panelboards, eliminating the need for complex retrofits. It also serves as a substitute for the Eaton FD3100 F-Frame. Rated to interrupt 65kA at 240VAC, the bolt-on mounting guarantees a secure connection.Specifications
| Brand | Challenger / Sylvania / Zinsco |
|---|---|
| Part Number | SF3C100-R |
| Series | SF |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC |
| Frame Type | SF |
|---|---|
| Terminal Type | Lugs |
| For Use With | Challenger Panelboards, Sylvania Panelboards, Zinsco Panelboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | HACR Rated |
Product FAQs
6 answersWhich panelboards accept the SF3C100 circuit breaker?
This F-frame breaker is engineered to fit legacy Challenger, Sylvania, and Zinsco commercial panelboards that require bolt-on connections.
Can the SF3C100 be used as a substitute for Eaton F-Frame breakers?
Yes, this breaker can serve as a substitute for the Eaton FD3100 F-Frame circuit breaker in compatible power distribution systems.
Are the trip settings on the SF3C100 adjustable?
No. It utilizes a thermal-magnetic trip unit with fixed long-time and instantaneous (LI) protection. Both the thermal and magnetic trip points are factory set and cannot be adjusted in the field.
What should be inspected before installing this breaker in a legacy Zinsco or Sylvania panel?
Older Zinsco and Sylvania panels can be prone to bus bar degradation. Before installing a replacement breaker, thoroughly inspect the panel bus bars for signs of pitting, oxidation, or heat damage to ensure a safe bolt-on connection.
Is the SF3C100 interchangeable with standard residential breakers?
No. The SF3C100 is an SF-frame molded case circuit breaker designed for commercial and industrial panelboards. It will not fit in standard residential load centers that require miniature plug-on or bolt-on breakers.
Does the SF3C100 come with lugs for wire termination?
Yes, this breaker includes both line and load lugs for wire termination. Ensure all connections are torqued to the manufacturer specifications printed on the breaker label.
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