Description
The Federal Pacific QMQB-4036 is a heavy-duty 400-amp fusible panelboard switch designed for dependable power isolation and circuit protection in commercial and industrial electrical distribution systems. This Federal Pacific QMQB-4036 panel-mounted switch operates at up to 600 VAC with a three-pole configuration, providing reliable load interruption while supporting high-capacity electrical installations. Its bolt-in design allows secure installation in compatible QMQB panelboards and simplifies panel upgrades or replacement projects.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Federal Pacific |
| Category |
Electrical Distribution |
| Part Number |
QMQB-4036 |
| Subcategory |
Fusible Panelboard Switch |
| Series |
QMQB |
| Switch Type |
Fusible Panelboard Switch |
| Current Rating |
400 A |
| Voltage Rating |
600 VAC |
| Phase |
Three Phase |
| Number of Poles |
3 |
| Mounting Style |
Bolt-In / Panel Mount |
| Fuse Compatibility |
Class RK1, RK5 (QMQB4036HJ: Class J) |
| Configuration |
Single |
| Interrupting Rating |
200 kA at 480 VAC (QMQB4036HJ) |
| NEMA Rating |
NEMA 1 |
| Compliance |
UL 98 Listed |
| Weight |
55 lbs |
Information About
QMQB-4036
The QMQB-4036 is a fusible panelboard switch from the Federal Pacific QMQB series, engineered for high-current electrical distribution applications. It features a panel-mounted, bolt-in construction that integrates with compatible QMQB and FDP panelboards while providing dependable switching and overcurrent protection through replaceable fuses. Designed for 400-amp, 600-volt, three-phase systems, the switch is available in configurations supporting Class RK1 and RK5 fuses, while the QMQB4036HJ variant accepts Class J fuses and provides a 200 kA interrupting rating at 480 VAC. Its UL 98 listing, NEMA 1 enclosure rating, and industrial-duty construction make it suitable for demanding commercial facilities, manufacturing plants, and other critical power distribution environments.
Key Features:
- High Current Rating: Supports electrical systems with a continuous current capacity of 400 amperes.
- Three-Pole Configuration: Designed for three-phase power distribution and disconnect applications.
- 600 VAC Operation: Rated for high-voltage commercial and industrial electrical systems.
- Fusible Protection: Compatible with Class RK1 and RK5 fuses; QMQB4036HJ variant accepts Class J fuses.
- Bolt-In Installation: Mounts securely into compatible Federal Pacific QMQB panelboards with minimal modification.
- UL 98 Listed: Meets recognized safety standards for enclosed and panel-mounted fusible switches.
- High Interrupting Capacity: QMQB4036HJ model provides up to 200 kA interrupting capacity at 480 VAC.
- Mounting Kit Option: Available with a factory mounting kit to simplify installation and replacement.
The QMQB-4036 delivers the reliability and precision required for high-capacity power distribution, circuit isolation, and industrial panelboard protection.
