OEM Industries
OEM Industries NT3 RT16-3 NH3 RT20-3 RO34 500A gG 500/690V ceramic square tube fuse line protection
A 500 A gG ceramic square-tube fuse rated for 500/690 V line protection
- TypeCircuit Protectors
- Amps500
- Rated 500 A for high-current line protection
- gG characteristic provides full-range overload and short-circuit defence
- Ceramic square-tube body withstands 690 V operation
- NT3 RT16-3 NH3 RT20-3 RO34 series fits standard industrial holders
- New condition ensures reliable performance from installation
Line protection fuse
This OEM Industries ceramic square tube fuse provides line protection for industrial circuits. It is built to the NT3 RT16-3 NH3 RT20-3 RO34 series specification and rated at 500 amps. The gG characteristic suits general-purpose applications.
Suited for 500-amp industrial feeds
Installers protecting 500-amp circuits at up to 690 volts will find this fuse matches the required rating. It is not intended for lower-current branch circuits or for systems that demand a different breaking characteristic.
500-amp gG rating at 690 volts
The decisive specification is the 500-amp gG rating at 690 volts, which determines whether this fuse coordinates with your protection scheme. Verify the required current and voltage against this rating before fitting.
Highlights
- Rated 500 A for high-current line protection
- gG characteristic provides full-range overload and short-circuit defence
- Ceramic square-tube body withstands 690 V operation
- NT3 RT16-3 NH3 RT20-3 RO34 series fits standard industrial holders
- New condition ensures reliable performance from installation
Specifications
| Series | NT3 RT16-3 NH3 RT20-3 RO34 |
|---|---|
| Model | NT3 RT16-3 NH3 RT20-3 RO34 |
| Type | Circuit Protectors |
| Amps | 500 |
Questions about this item
What size fuse holder or disconnect base does the 500 A ceramic square-tube fuse require?
The fuse is built to the NH3 RT16-3 RT20-3 RO34 series dimensions, so it fits standard NH3 fuse bases or disconnects rated for 500 A at 690 V.
Will the gG 500 A fuse coordinate with existing 16 A, 20 A or 34 A downstream breakers?
Yes, the gG characteristic provides full-range protection and will discriminate with smaller 16 A, 20 A or 34 A breakers on the same 500/690 V circuit.
How can I confirm the fuse is intact after installation?
Measure continuity across the ceramic tube with a multimeter; a low resistance reading shows the element is intact and the fuse is ready for service.
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