OEM Industries
OEM Industries NT3 RT16-3 NH3 RT20-3 RO34 300A 500/690V line protection
Ceramic square tube fuse rated 300A gG at 500/690V for line protection
- TypeCircuit Protectors
- Amps300
- 300 A gG rating protects circuits against overloads
- 500/690 V ceramic square tube handles high-voltage lines
- NT3 RT16-3 NH3 RT20-3 RO34 series fits standard fuse holders
- Ceramic body resists heat during fault conditions
- New component ensures reliable line protection
Circuit protector for 300 A circuits
This ceramic square-tube fuse provides line protection in industrial and generator applications. It is rated for 300 amps at 500/690 volts and carries a gG characteristic. The NT3 RT16-3 NH3 RT20-3 RO34 series fits compatible fuse holders in electrical supply systems.
Rated current and voltage define fit
The single specification that decides compatibility is the 300 A rating combined with the 500/690 V rating. Only circuits designed for these exact values should use this device. The gG time-current curve and ceramic body are built to match that electrical envelope.
Suits installers protecting 300 A lines
Electricians and maintenance teams protecting 300 A feeders at 500/690 V will find this fuse appropriate. Buyers who need a different current rating, a different voltage class or a non-gG characteristic should look at other parts.
Highlights
- 300 A gG rating protects circuits against overloads
- 500/690 V ceramic square tube handles high-voltage lines
- NT3 RT16-3 NH3 RT20-3 RO34 series fits standard fuse holders
- Ceramic body resists heat during fault conditions
- New component ensures reliable line protection
Specifications
| Series | NT3 RT16-3 NH3 RT20-3 RO34 |
|---|---|
| Model | NT3 RT16-3 NH3 RT20-3 RO34 |
| Type | Circuit Protectors |
| Amps | 300 |
Questions about this item
What does the 300 A rating mean once the fuse is installed?
It means the fuse will carry 300 A continuously and open the circuit if current exceeds that value, protecting downstream equipment.
What does the 500/690 V marking cap in practice?
The fuse is rated for 500 V AC and 690 V AC systems, so it safely interrupts faults up to those voltages.
What physical format does the ceramic square tube need to fit?
It follows the NH3 RT20-3 RO34 size, so it mounts in standard NH3 fuse bases or holders.
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