Lovato GMFJ060C12 is a three-pole UL98 fused switch disconnector with a central command pole, 60 A UL rating, 63 A IEC rating and Class J fuse holders for industrial switching, isolation and circuit protection.
SKU:GMFJ060C12
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Why Choose the Lovato GMFJ060C12 3-Pole Fused Switch Disconnector?
The Lovato GMFJ060C12 is a three-pole switch disconnector with integrated Class J fuse holders, designed for reliable switching, isolation and fused protection in industrial low-voltage installations. It carries a 60 A UL general-purpose current rating and an IEC conventional free-air thermal current rating of 63 A at up to 40°C.
Part of the Lovato GM series, the GMFJ060C12 features a central command pole and is approved to UL98 for use with Class J 60 A fuses. Under IEC ratings, it supports AC-21A, AC-22A and AC-23A utilisation categories at 63 A up to 690 V AC, making it suitable for demanding switching and isolation duties.
The GMFJ060C12 combines strong electrical performance with practical panel installation. It offers a 1000 V rated insulation voltage, 12 kV impulse withstand voltage, 2.5 kA short-time withstand current and a UL short-circuit rating of up to 200 kA RMS when applied with the specified Class J fuse protection.
Key Advantages
Combines three-pole switching, isolation and Class J fuse holding in one device.
60 A UL general-purpose rating with a 63 A IEC thermal rating at up to 40°C.
AC-21A, AC-22A and AC-23A operational current of 63 A up to 690 V AC.
High 1000 V insulation voltage and 12 kV impulse withstand rating.
UL98 short-circuit rating of up to 200 kA RMS with specified Class J fuse protection.
Durable design with a rated mechanical life of 10,000 operating cycles.
Key Features
Lovato GM series fused switch disconnector.
3-pole configuration for three-phase AC circuits.
Central command pole design.
Designed for Class J fuses up to 60 A.
63 A IEC conventional free-air thermal current at ≤40°C.
60 A UL general-purpose current rating.
30 kW AC-23A rating at 400 V and 55 kW at 690 V.
Built-in terminal lugs accepting IEC conductors from 2.5–25 mm².
Screw mounting for secure installation on a panel or mounting plate.
IP20 frontal protection.
High-Performance Fused Switching and Circuit Isolation
Fused switch disconnectors combine manual electrical isolation with fuse-based short-circuit and overcurrent protection in a coordinated assembly. The Lovato GMFJ060C12 accommodates Class J fuses and provides AC-21A, AC-22A and AC-23A switching capability, allowing it to serve demanding industrial loads while providing a clearly defined means of circuit disconnection.
For UL applications, the GMFJ060C12 carries a 60 A general-purpose rating at up to 600 V and can achieve a short-circuit rating of 200 kA RMS with the specified Class J fuse protection. This makes it particularly suitable for industrial machinery and power distribution systems where high available fault currents demand robust fused protection.
Typical Applications
Three-phase industrial machinery and production equipment.
Motor feeder and equipment isolation circuits.
Industrial control panels and electrical enclosures.
Power distribution and feeder circuits.
UL98 machinery disconnect applications.
Circuits requiring Class J fuse protection with manual isolation.
Technical Specifications
HS Code
85365080
Manufacturer
Lovato Electric
Series
GM
Model
GMFJ060C12
Product type
Switch disconnector with fuse holder
Command configuration
Central command pole
Number of poles
3
Operating voltage type
AC
Fuse type
Class J
IEC thermal current Ith at ≤40°C
63 A
IEC thermal current Ith at ≤65°C
50 A
UL general-purpose current rating
60 A
UL maximum operating voltage
600 V
Rated insulation voltage Ui
1000 V
Rated impulse withstand voltage Uimp
12 kV
AC-21A operational current
63 A at 400, 500 and 690 V
AC-22A operational current
63 A at 400, 500 and 690 V
AC-23A operational current
63 A at 400, 500 and 690 V
Rated operational power AC-23A
30 kW at 400 V; 55 kW at 690 V
Maximum power dissipation per pole
4 W
Maximum fuse power dissipation
7.5 W
Rated short-time withstand current Icw, 1 second
2.5 kA RMS
Short-circuit protection with fuse
Class J / 60 A
UL short-circuit rating
200 kA RMS
Making capacity AC-23A at 400 V
630 A
Breaking capacity AC-23A at 400 V
504 A
UL three-phase motor rating at 240 V
15 HP / 42 A FLA
UL three-phase motor rating at 480 V
30 HP / 40 A FLA
UL three-phase motor rating at 600 V
52 HP / 52 A FLA
Mechanical life
10,000 cycles
Electrical life AC-21A
6,000 cycles
Normal operating position
Vertical plane
Allowable operating position
Any
Mounting
Screw fixing
Terminal type
Built-in terminal lug
Maximum terminal tightening torque
3.5 Nm
IEC conductor section
2.5–25 mm²
Conductor range
14–4 AWG
Operating temperature
-25 to +55°C
Storage temperature
-40 to +70°C
Maximum altitude
3000 m
Frontal protection
IP20
Pollution degree
3
Weight
1.528 kg
Package dimensions
210 × 145 × 135 mm
EAN
8013975229736
ETIM classification
EC000216 - Switch disconnector
UL standard
UL98
Certification
cULus according to UL98, CSA C22.2 No. 4, EAC
Conformity
IEC/EN 60947-1 and IEC/EN 60947-3
Frequently Asked Questions
What is the Lovato GMFJ060C12?
The GMFJ060C12 is a three-pole fused switch disconnector with a central command pole, designed for Class J fuses and rated at 60 A for UL general-purpose applications.
What type of fuse does the GMFJ060C12 use?
The Lovato GMFJ060C12 is designed for Class J fuses up to 60 A, providing fused circuit protection together with manual switching and isolation.
What are the IEC current ratings of the GMFJ060C12?
The GMFJ060C12 has an IEC conventional free-air thermal current rating of 63 A at up to 40°C and is rated at 63 A for AC-21A, AC-22A and AC-23A operation at 400, 500 and 690 V AC.
What is the short-circuit rating of the GMFJ060C12?
For UL applications, the GMFJ060C12 has a short-circuit rating of up to 200 kA RMS when used with the specified Class J 60 A fuse protection. Its IEC rated short-time withstand current Icw is 2.5 kA RMS for one second.
Is the GMFJ060C12 suitable for motor applications?
Yes. Under UL ratings, the GMFJ060C12 is rated for three-phase motors up to 15 HP at 240 V, 30 HP at 480 V and 52 HP at 600 V, subject to correct installation and fuse selection.
Reliable Fused Switching Solutions from Lovato Electric
Lovato Electric GM fused switch disconnectors combine robust manual isolation, Class J fuse protection and recognised IEC and UL performance for industrial machinery, switchboards and demanding low-voltage power distribution applications.
HS Code
85365080
Manufacturer
Lovato Electric
Series
GM
Model
GMFJ060C12
Product type
Switch disconnector with fuse holder
Command configuration
Central command pole
Number of poles
3
Operating voltage type
AC
Fuse type
Class J
IEC thermal current Ith at ≤40°C
63 A
IEC thermal current Ith at ≤65°C
50 A
UL general-purpose current rating
60 A
UL maximum operating voltage
600 V
Rated insulation voltage Ui
1000 V
Rated impulse withstand voltage Uimp
12 kV
AC-21A operational current
63 A at 400, 500 and 690 V
AC-22A operational current
63 A at 400, 500 and 690 V
AC-23A operational current
63 A at 400, 500 and 690 V
Rated operational power AC-23A
30 kW at 400 V; 55 kW at 690 V
Maximum power dissipation per pole
4 W
Maximum fuse power dissipation
7.5 W
Rated short-time withstand current Icw, 1 second
2.5 kA RMS
Short-circuit protection with fuse
Class J / 60 A
UL short-circuit rating
200 kA RMS
Making capacity AC-23A at 400 V
630 A
Breaking capacity AC-23A at 400 V
504 A
UL three-phase motor rating at 240 V
15 HP / 42 A FLA
UL three-phase motor rating at 480 V
30 HP / 40 A FLA
UL three-phase motor rating at 600 V
52 HP / 52 A FLA
Mechanical life
10,000 cycles
Electrical life AC-21A
6,000 cycles
Normal operating position
Vertical plane
Allowable operating position
Any
Mounting
Screw fixing
Terminal type
Built-in terminal lug
Maximum terminal tightening torque
3.5 Nm
IEC conductor section
2.5–25 mm²
Conductor range
14–4 AWG
Operating temperature
-25 to +55°C
Storage temperature
-40 to +70°C
Maximum altitude
3000 m
Frontal protection
IP20
Pollution degree
3
Weight
1.528 kg
Package dimensions
210 × 145 × 135 mm
EAN
8013975229736
ETIM classification
EC000216 - Switch disconnector
UL standard
UL98
Certification
cULus according to UL98, CSA C22.2 No. 4, EAC
Conformity
IEC/EN 60947-1 and IEC/EN 60947-3
No documents available for this product.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...