QSF4033B - 400Amp Panel Switch
- 400 Amp
- 250 Volts AC
- 3 Pole
Purchase Options: Refurbished
QSF4033B - 400Amp Panel Switch Description
QSF4033B - 400Amp Panel Switch
Electricians and facility managers choose the Zinsco QSF4033B when they need a dependable panel switch that handles serious power. This 400-amp, 3-phase switch operates at 250 volts AC and uses a fusible design that works with Class RK1 and RK5 fuses. You can install it directly using its bolt-in mount—no adapters or special hardware needed. Whether you're replacing outdated gear or building out a new panel, this switch lets you manage high current safely and efficiently.
Key Features and Benefits
- Delivers reliable overcurrent protection: Using standard RK1 or RK5 fuses.
- Installs easily with a bolt-in mount: No extra brackets or customization required.
- Handles up to 400 amps: Making it ideal for larger commercial and industrial systems.
- Withstands frequent use: Built for demanding environments where downtime isn’t an option.
Technical Specifications
- Amperage: 400 Amps
- Voltage: 250 Volts AC
- Phases: 3
- Poles: 3
- Switch Type: Fusible, single unit
- Mounting Style: Bolt-in
- Fuse Compatibility: Class RK1 & RK5
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Dimensions:
- Length: 13.75 inches
- Width: 22.5 inches
- Depth: 6.25 inches
Material Compliance and Certifications
- Manufacturing Standards: Zinsco built this switch using manufacturing standards common at the time.
- Code Compliance: Before installing it in a modern setup, check current electrical codes and regulations. A licensed electrician can confirm whether this unit fits safely into your system.
Where It Works Best
- Use this panel switch in commercial buildings, manufacturing plants, or industrial facilities that need strong power control and safe, fuse-based protection. If you're updating older Zinsco panels or replacing a worn-out switch, the QSF4033B fits well and performs reliably.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Specifications
- Width:22.5
- Height:13.75
- Depth:6.25
- Poles:3
- Amperes:400
- A.I.C. Rating & Volts:250
- Type:QSF
- Sub-Category:PANELBOARD SWITCH
- Approx Dimensions:22.25"W x 13.75"H x 6.25"D
- Additional Notes:3 Pole, 400 Amperes, 250 Volts A.C., Fusible Single Unit, Type QSF, Bolt-in Type Panel Switch. Accepts Class RK1 & RK5 Fuses.
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