This screwcap fits DIII-type D-series fuse bases with an E33 screw thread and a 63A current rating. The porcelain body provides robust insulation and thermal resistance at the fuse carrier entry, appropriate for higher-current circuits.

The DIII designation corresponds to the largest standard size in the D-type diazed fuse system, making this screwcap suitable for main distribution boards and industrial panel installations.

Key Features

• Designed for DIII-type fuse bases with E33 thread
• Rated current: 63A
• Porcelain construction for high-temperature insulation
• Compatible with standard DIII diazed fuse system

Product Benefits

• Porcelain withstands heat generated at 63A load without degradation
• Correct E33 thread ensures a secure, vibration-proof fit on the fuse base
• DIII rating covers main feed circuits and sub-distribution boards
• Screw-on installation without specialist tools

Technical Specifications

• Type: DIII (D-type fuse base screwcap)
• Thread: E33
• Rated Current: 63A
• Material: Porcelain

Why You'll Love It

• Porcelain body resists cracking and thermal fatigue even at sustained 63A loads
• E33 thread is the correct size for DIII bases — no risk of mis-fitting a smaller cap
• Straightforward replacement for worn or damaged caps on existing DIII fuse bases
• Package includes 1× screwcap for fuse base DIII/E33/63A