Insulated Screwdriver Wiha 45421 — 1000V protection, oil-hardened chrome-vanadium blade

The Insulated Screwdriver Wiha 45421 is engineered for electrical work requiring reliable insulation and precise torque control. The tool integrates a hardened chrome‑vanadium blade and an ergonomically shaped insulated handle rated for protection up to 1000 V. Its construction balances durability and tactile feedback to support repetitive fastening and adjustment tasks in live or potentially live electrical installations.

Advantages

This insulated screwdriver combines an oil‑hardened chrome‑vanadium blade for wear resistance and edge retention with a certified insulated handle that reduces the risk of electric shock when working on equipment up to 1000 V. The handle shape enhances grip and control during fine adjustments, while the blade profile ensures reliable engagement with screw heads to minimize cam‑out and surface damage. The overall build is intended to withstand regular professional use in electrical maintenance environments.

Suitable for

• Electrical installation and maintenance on residential and commercial circuits
• Servicing control panels, switchgear and terminal blocks
• Work on machines and equipment where components may be live up to 1000 V
• Precision fastening tasks in electrical and electronic assemblies

Key specifications

• Insulation rating: protection up to 1000 V
• Blade material: oil‑hardened chrome‑vanadium steel for enhanced durability
• Handle: certified insulated ergonomic handle for safe grip and torque transfer
• Intended use: electrical applications and live‑circuit work within rated voltage

How to use

Before use, visually inspect the insulated handle and blade for damage or contamination that could compromise protection. Select the correct screwdriver tip for the screw head to ensure proper engagement. Apply steady axial pressure and controlled torque while turning to avoid slipping or damaging the screw. Use the tool only on circuits and equipment within the specified insulation rating and follow local safety regulations and lockout/tagout procedures where applicable.

Recommendations

Store the insulated screwdriver in a clean, dry place away from solvents, oils or sharp objects that could damage the insulation. Periodically check the tool for cracks, cuts or wear on the insulation; remove from service if any damage is found. Do not exceed the rated voltage and always combine use of insulated hand tools with appropriate personal protective equipment and safe working practices when performing electrical work.