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White ceramic square tube fuse with metal end caps

OEM Industries

OEM Industries NT3 RT16-3 NH3 RT20-3 RO34 200A gG 500/690V ceramic square tube fuse line protection

SKU CH-Y7WH-XCKVD

A 200 A gG ceramic square-tube fuse rated for 500/690 V line protection

  • Amperage200
  • Product typeCircuit Protectors
  • 200 A rating handles heavy industrial loads
  • gG characteristic protects cables against overloads
  • 500/690 V rating suits three-phase mains
  • Ceramic square-tube body withstands high fault energy
  • NT3 RT16-3 NH3 RT20-3 RO34 series for standard holder fit

Industrial ceramic fuse 200 A gG

The OEM Industries ceramic square-tube fuse is a line-protection device rated at 200 A with a gG characteristic for general-purpose overcurrent protection. It operates at 500/690 V and belongs to the NT3 RT16-3 NH3 RT20-3 RO34 series. The ceramic body provides high breaking capacity in industrial and generator applications. This component is supplied new and ready for installation.

Verify voltage and current ratings before fitting

Confirm that the circuit voltage does not exceed 690 V and that the prospective fault current is within the fuse's breaking capacity. Ensure the holder or fuse base accepts the NT3 RT16-3 NH3 RT20-3 RO34 form factor and that the 200 A rating matches the conductor ampacity and protection coordination requirements. Check that the gG time-current curve suits the load type and that no supplementary protection is mandated by local codes.

Suits industrial panels

This fuse fits switchboards, motor circuits and generator outputs that require a 200 A gG link at 500/690 V. It is not intended for semiconductor protection, high-speed DC applications or circuits demanding a different characteristic such as aM or aR. Buyers needing a lower or higher current rating, a different voltage class or a blade-type mounting should select an alternative device.

How it compares

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Price $57.99
Typical for this category: the median of 1,135 items is $54.99.

Specifications

Product
Product lineNT3 RT16-3 NH3 RT20-3 RO34
Model nameNT3 RT16-3 NH3 RT20-3 RO34
Product typeCircuit Protectors
Power
Amperage200

Questions about this item

What accessories or hardware are included with the NT3 RT16-3 NH3 RT20-3 RO34 fuse, and what must be purchased separately?

The fuse is supplied as a single ceramic square-tube element rated 200 A gG for 500/690 V. Fuse holders, mounting bases or indicator contacts are not included and must be sourced separately.

How do I choose between the NT3, RT16-3, NH3 and RT20-3 designations shown in the series name?

Those codes describe the same RO34 model — a 200 A gG ceramic square-tube fuse for 500/690 V systems. Select the listing that matches your required 200 A rating and 500/690 V voltage class.

What does the 200 A gG rating mean when the fuse is installed in a 500/690 V circuit?

The fuse will carry 200 A continuously and provide general-purpose (gG) short-circuit protection on systems up to 690 V AC, opening quickly under fault current while tolerating normal load on 500 V or 690 V networks.

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