Zinsco QFL3200 Molded Case Circuit Breaker
- 200A
- 3 Pole
- Unit Mount
Quantity
Zinsco QFL3200 - 200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Manufactured for legacy power distribution, the Zinsco QFL3200 is a 200A, 3-pole molded case circuit breaker. It ensures reliable thermal-magnetic protection for commercial facilities operating at 240VAC. This unit-mount component integrates seamlessly into older Zinsco panelboards and switchboards. It provides a straightforward replacement solution, cross-referencing with UBIZ2200 to keep aging systems operational.Specifications
| Brand | Zinsco |
|---|---|
| Series | QFL |
| Amperage | 200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Zinsco Panelboards, Switchboards |
| Wire Gauge | 2/0 AWG-300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Accessories | Line and Load Lugs Included |
|---|---|
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker, Feed-Through |
Product FAQs
6 answersWhat equipment is the Zinsco QFL3200 designed to fit?
This unit-mount breaker is engineered specifically for legacy Zinsco panelboards and switchboards. It serves as a direct replacement to keep aging electrical infrastructure operational without requiring complete panel upgrades.
How does the feed-thru connection on the QFL3200 operate?
Unlike plug-on breakers that connect directly to a panel busbar, this feed-thru breaker is unit-mounted and uses line and load lugs to connect to the circuit wiring.
What wire sizes and materials are compatible with the QFL3200 terminals?
The breaker is equipped with lugs that accept both aluminum and copper conductors, accommodating wire gauges from 2/0 AWG up to 300 kcmil.
How does the thermal-magnetic trip unit function on this breaker?
The fixed LI (long-time and instantaneous) trip unit uses a bimetallic strip for delayed overload protection and an electromagnetic assembly to trip immediately during severe short circuits.
Is the Zinsco QFL3200 still in active production?
No. Zinsco is a legacy brand, and original QFL series breakers are obsolete. Replacements are sourced specifically to maintain and service existing Zinsco switchboards and panelboards.
What safety considerations apply when replacing a Zinsco QFL3200?
When servicing legacy Zinsco panels, electricians should carefully inspect the enclosure and connections for signs of arcing or heat damage. Ensure all lug connections are properly torqued to maintain a secure connection.
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