Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
GMFJ600C03 Lovato 3P SWITCH DISC. W/FUSE HOLDER J 600A C03
Lovato GMFJ600C03 is a three-pole 600 A UL98 switch disconnector with Class J fuse holders, a left command pole and a 200 kA RMS short-circuit rating with the specified Class J 600 A fuse.
£2,843.87
Why Choose the Lovato GMFJ600C03 600 A Fusible Switch Disconnector?
The Lovato GMFJ600C03 is a heavy-duty three-pole switch disconnector with integrated fuse holders, designed for industrial AC switching, isolation and fused circuit protection. Part of the Lovato GM fusible switch disconnector range, it accommodates Class J UL fuses and features a left command pole configuration.
Rated at 600 A for UL general-purpose applications and to UL98, the GMFJ600C03 supports operating voltages up to 600 V AC. When used with the specified Class J 600 A fuse, it provides a high short-circuit rating of 200 kA RMS, making it suitable for demanding industrial power-distribution systems.
For IEC applications, the GMFJ600C03 has a conventional free-air thermal current of 600 A at up to 40 °C, a rated insulation voltage of 1000 V and a rated impulse withstand voltage of 12 kV. Its robust plate-mounted construction and bar terminals provide a practical solution for high-current switchboards, machinery and feeder isolation.
Key Advantages
- Combines switch disconnection and Class J fuse accommodation in a single device.
- 600 A UL general-purpose current rating to UL98.
- Three-pole configuration for industrial three-phase AC systems.
- High 200 kA RMS short-circuit rating with the specified Class J 600 A fuse.
- IEC operational current up to 630 A depending on utilisation category and voltage.
- 1000 V rated insulation voltage and 12 kV impulse withstand voltage.
- Left command pole arrangement for compatible Lovato operating accessories.
- Suitable for high-current industrial feeders, machinery and power-distribution equipment.
Key Features
- Three-pole fusible switch disconnector.
- Class J UL fuse type.
- 600 A conventional free-air thermal current at up to 40 °C.
- 480 A conventional free-air thermal current at up to 65 °C.
- 600 A UL general-purpose current rating.
- 600 V AC maximum UL operating voltage.
- Left command pole configuration.
- Bar-type main terminals.
- Screw fixing for plate-mounted installation.
- IP20 frontal protection.
- Mechanical endurance of 5000 operating cycles.
High-Current Switching with Class J Fuse Protection
A fusible switch disconnector combines manual circuit switching and isolation with fuse holders for overcurrent and short-circuit protection. This arrangement allows the supply to be positively disconnected for maintenance while correctly selected Class J fuse links provide protection against high fault currents.
The Lovato GMFJ600C03 is engineered for demanding three-phase applications requiring a 600 A UL98 fusible disconnect. Its 200 kA RMS UL short-circuit rating with the specified Class J fuse, 20 kA one-second IEC short-time withstand current and AC-23A switching capability make it suitable for high-current feeders, motor circuits and industrial distribution systems.
Typical Applications
- Industrial power-distribution switchboards.
- UL98 fusible disconnect installations.
- Three-phase machinery and motor isolation.
- High-current feeder switching and protection.
- OEM machinery and industrial control panels.
- Installations requiring high fault-current protection with Class J fuses.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Fuse switch disconnector | |
|---|---|---|
| Power | 355 kW | |
| Poles | 3-pole | |
| HS Code | 85365080 | |
| Manufacturer | Lovato Electric | |
| Series | GM | |
| Model | GMFJ600C03 | |
| Product designation | Switch disconnector with fuse | |
| Product type | Switch disconnector with fuse holder | |
| Number of poles | 3 | |
| Operating voltage type | AC | |
| Fuse type | Class J | |
| Command pole | Left | |
| IEC conventional free-air thermal current Ith at ≤40 °C | 600 A | |
| IEC conventional free-air thermal current Ith at ≤65 °C | 480 A | |
| Rated insulation voltage Ui | 1000 V | |
| Rated impulse withstand voltage Uimp | 12 kV | |
| AC-21A operational current | 630 A at 400 / 500 / 690 V AC | |
| AC-22A operational current | 630 A at 400 V AC; 600 A at 500 / 690 V AC | |
| AC-23A operational current | 630 A at 400 / 500 / 690 V AC | |
| Rated operational power AC-23A | 355 kW at 400 V; 630 kW at 690 V | |
| Rated short-time withstand current Icw (1 s) | 20 kA RMS | |
| Short-circuit protection fuse | Class J / 600 A | |
| AC-23A making capacity at 400 V | 6300 A | |
| AC-23A breaking capacity at 400 V | 6400 A | |
| Maximum power dissipation per pole | 46 W | |
| Maximum fuse power dissipation | 50 W | |
| Mechanical life | 5000 cycles | |
| Electrical endurance | 1000 cycles at AC-23A, 400 V | |
| Terminal type | Bar | |
| Maximum terminal tightening torque | 56.5 Nm | |
| Fuse-link bolt tightening torque | 40 Nm | |
| Terminal lug tightening torque | 54 Nm | |
| Terminal lug kit | GMX504 | |
| Fixing | Screw | |
| Installation | Screw mounting on plate | |
| Normal operating position | Vertical plane | |
| Allowable mounting position | Any | |
| UL standard | UL98 | |
| UL general-purpose current rating | 600 A | |
| Maximum UL operating voltage | 600 V AC | |
| UL short-circuit rating | 200 kA RMS with Class J 600 A fuse | |
| Three-phase motor rating at 240 V | 200 HP / 480 A | |
| Three-phase motor rating at 480 V | 400 HP / 477 A | |
| Three-phase motor rating at 600 V | 500 HP / 472 A | |
| Operating temperature | -25 °C to +55 °C | |
| Storage temperature | -40 °C to +70 °C | |
| Maximum altitude | 3000 m | |
| Frontal protection | IP20 | |
| Pollution degree | 3 | |
| Weight | 15.22 kg | |
| Compliance | IEC/EN 60947-1, IEC/EN 60947-3 | |
| Certification | cULus according to UL98, CSA C22.2 No. 4, EAC | |
| ETIM 8.0 classification | EC000216 – Switch disconnector |
Frequently Asked Questions
What is the Lovato GMFJ600C03?
The GMFJ600C03 is a three-pole 600 A UL98 switch disconnector with integrated Class J fuse holders, designed for industrial AC switching, isolation and fused circuit protection.
What type of fuse does the GMFJ600C03 use?
The GMFJ600C03 is designed for UL Class J fuses, with a specified short-circuit protection fuse rating of 600 A.
What is the UL short-circuit rating of the Lovato GMFJ600C03?
The GMFJ600C03 has a 200 kA RMS short-circuit rating when used with the specified Class J 600 A fuse.
What is the maximum operating voltage of the GMFJ600C03?
Under UL ratings, the GMFJ600C03 supports a maximum operating voltage of 600 V AC. Its IEC rated insulation voltage is 1000 V.
What three-phase motor ratings does the GMFJ600C03 support?
Under UL ratings, the GMFJ600C03 is rated for three-phase motors up to 200 HP at 240 V, 400 HP at 480 V and 500 HP at 600 V.
Trusted by Industrial Panel Builders Worldwide
Lovato Electric GM fusible switch disconnectors provide panel builders, machine manufacturers and electrical engineers with robust switching, isolation and fuse-protection solutions for demanding industrial power-distribution systems and UL98 applications.
