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Ten white ceramic spiral fuses with silver end caps

OEM Industries

OEM Industries RO21 4A gG E27 RL6-25 RL93 RLS2 5SD 5SB 500V 50KA Spiral-style ceramic fuse line protection

SKU CH-DT6S-VC1BC

Pack of ten 4 A gG ceramic fuses with E27 bases rated for 500 V and 50 kA breaking capacity

  • Amperage4
  • Product typeCircuit Protectors
  • 10-piece pack simplifies stock for multiple circuits
  • 4 A gG rating protects general-purpose loads
  • E27 base fits standard screw-in holders
  • 500 V AC withstands industrial supply voltages
  • 50 kA breaking capacity clears high fault currents

4 A spiral-style ceramic fuse pack

This pack contains ten spiral-style ceramic fuses rated at four amps and five hundred volts. They use an E27 base and carry a gG characteristic for general line protection. The set suits maintenance teams and installers who need a ready supply of replaceable circuit protectors for industrial or commercial panels.

Replaces worn or blown E27 gG links

The fuses replace existing E27 gG links that have opened under fault current or aged in service. A swap is worth it when the original element shows discolouration, a visible break or when periodic testing confirms degraded performance. They are not for circuits that demand a different tripping curve or a higher breaking capacity than fifty kiloamps.

Simple screw-in installation

Each unit threads into a standard E27 holder without tools beyond a firm hand twist. The ceramic body resists heat but can crack if overtightened or dropped during fitting. The most common issue is a loose contact caused by debris on the holder threads, which leads to nuisance heating.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $47.99
Cheaper than about 57% of the 1,135 comparable items (median $54.99).

Specifications

Product
Product lineRO21 E27 RL6-25 RL93 RLS2 5SD 5SB
Model nameRO21 E27 RL6-25 RL93 RLS2 5SD 5SB
Product typeCircuit Protectors
Power
Amperage4

Questions about this item

What diameter fuse holder does the E27 base of this RO21 ceramic fuse require?

The E27 base needs a 27 mm diameter fuse holder for a secure fit.

How do you install the spiral-style ceramic fuse, and what is the common mistake?

Screw the fuse into the E27 holder until the ceramic body seats firmly; the common mistake is stopping at finger-tight instead of using a fuse puller to achieve full contact.

When should the 4 A gG RO21 fuse be replaced after a fault?

Replace the fuse immediately after it interrupts a 50 kA fault at 500 V, because the spiral element is single-use and cannot be reset.

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