Klein Tools 47140INS 1000V insulated 8-piece box end wrench set product display, showing an orange heavy-duty carrying case with foam inserts alongside eight individual metric-sized utility wrenches lined up symmetrically, all featuring a dual-layer orange and black structural design isolated on a white background.
A marketing graphic titled What's Included, displaying the eight individual Klein Tools 1000V insulated box end wrenches in ascending order by size, explicitly marked with icons and labels for 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch, 5/8 inch, 11/16 inch, 3/4 inch, and 13/16 inch fractional parameters against a white background.
A close-up product callout graphic highlighting the 1000V Rated with Three-Part Insulation feature on a 13/16-inch Klein Tools insulated box end wrench, showcasing a detailed inset diagram pointing out the white wear indication layer under the orange handle material for live-line high-voltage shock protection.
An open Klein Tools protective premium carrying case shown from an angled perspective, showcasing precision-cut carbon-textured custom foam inserts holding the eight insulated box end wrenches tightly in place within a rugged, lockable bright orange impact-resistant hardshell mold.
A detailed close-up shot of a 3/4-inch Klein Tools insulated box end wrench, focusing on the specialized stepped box end design engineered to provide better clearance and easier access to nuts and bolt fasteners located in tight, hard-to-reach commercial electrical distribution spaces.
An informative tool diagram titled Engineered for Class 2 Gloves, showing a close-up profile view of an operator's hand wearing a thick leather and rubber high-voltage lineman glove firmly holding onto the oversized handle of a 13/16-inch insulated wrench to demonstrate a comfortable and secure grip.
A close-up field graphic showing a worker wearing a Class 2 electrical safety glove lifting an insulated box end wrench out of its custom foam insert case layout, with a text label pointing out that tools are stored in an offset position for an easy reach during live-line hot system repairs.
Klein Tools 47140INS 1000V insulated 8-piece box end wrench set master product configuration, displaying the orange heavy-duty carrying case with custom foam inserts alongside eight individual fractional utility wrenches lined up symmetrically, featuring a dual-layer orange and black structural design on a white background.
The Name on the Tools is Our Reputation promotional how to video
Klein Tools 47140INS 1000V insulated 8-piece box end wrench set product display, showing an orange heavy-duty carrying case with foam inserts alongside eight individual metric-sized utility wrenches lined up symmetrically, all featuring a dual-layer orange and black structural design isolated on a white background.
A marketing graphic titled What's Included, displaying the eight individual Klein Tools 1000V insulated box end wrenches in ascending order by size, explicitly marked with icons and labels for 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch, 5/8 inch, 11/16 inch, 3/4 inch, and 13/16 inch fractional parameters against a white background.
A close-up product callout graphic highlighting the 1000V Rated with Three-Part Insulation feature on a 13/16-inch Klein Tools insulated box end wrench, showcasing a detailed inset diagram pointing out the white wear indication layer under the orange handle material for live-line high-voltage shock protection.
An open Klein Tools protective premium carrying case shown from an angled perspective, showcasing precision-cut carbon-textured custom foam inserts holding the eight insulated box end wrenches tightly in place within a rugged, lockable bright orange impact-resistant hardshell mold.
A detailed close-up shot of a 3/4-inch Klein Tools insulated box end wrench, focusing on the specialized stepped box end design engineered to provide better clearance and easier access to nuts and bolt fasteners located in tight, hard-to-reach commercial electrical distribution spaces.
An informative tool diagram titled Engineered for Class 2 Gloves, showing a close-up profile view of an operator's hand wearing a thick leather and rubber high-voltage lineman glove firmly holding onto the oversized handle of a 13/16-inch insulated wrench to demonstrate a comfortable and secure grip.
A close-up field graphic showing a worker wearing a Class 2 electrical safety glove lifting an insulated box end wrench out of its custom foam insert case layout, with a text label pointing out that tools are stored in an offset position for an easy reach during live-line hot system repairs.
Klein Tools 47140INS 1000V insulated 8-piece box end wrench set master product configuration, displaying the orange heavy-duty carrying case with custom foam inserts alongside eight individual fractional utility wrenches lined up symmetrically, featuring a dual-layer orange and black structural design on a white background.
The Name on the Tools is Our Reputation promotional how to video
KLEIN TOOLS

Klein Tools Wrench Set 47140INS 8 Piece 1000V Insulated Box End 3/8 to 13/16 Inch (Stepped Profile Wear Indicator SAE Electrician Kit Carrying Case)

Only 3 left
SKU: 47140INS
$299.99 USD

Description

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Klein Tools 47140INS 8 Piece 1000V Insulated Box End Wrench Set

The Klein Tools 47140INS 8-Piece 1000V Insulated Box End Wrench Set operates as a dielectric mechanical hand tool kit engineered to turn hex nuts and bolts near energized electrical infrastructure. Certified to ASTM F1505-16 and IEC 60900 standards for shock protection up to 1000V AC, this 6.40-pound set features forged steel construction wrapped in a three-part insulation matrix with a white wear-indicator warning layer. Ranging from 3/8 inch to 13/16 inch in SAE imperial sizes, these wrenches utilize stepped box-end geometry and oversized handles optimized for use with Class 2 rubber electrical safety gloves, enabling utility crews to execute safe terminations on transformer busbars and switchgear.

Best Used For:

  • Energized Transformer & Busbar Maintenance: Turning terminal nuts and mounting bolts near live electrical busbars certified for shock isolation up to 1000V AC.
  • High-Voltage Switchgear & Power Grid Servicing: Fastening hardware in tight utility cabinets using stepped box-end clearance profiles while wearing Class 2 safety gloves.
  • Substation & Underground Feeder Operations: Torque-tightening primary electrical connections with insulated wrenches stored in a protective foam-lined case.

Key Performance & Safety Features

  • 1000V Dielectric Safety Isolation: Individually tested to meet ASTM F1505-16 and IEC 60900 standards for live-line shock protection up to 1000V.
  • Three-Part Insulation with Wear Indicator: Inner white dielectric warning layer becomes visible if outer polymer insulation becomes scored or compromised.
  • Stepped Box End Profile Geometry: Angled offset configuration provides increased clearance to reach bolts in narrow terminal housings.
  • Oversized Glove-Friendly Handles: High-torque handle profile maximizes rotational leverage and grip stability when operating in bulky rubber safety gloves.
  • Forged Alloy Steel Construction: Heat-treated steel wrench core delivers high torsional strength to break rusted or high-torque fasteners.
  • Rugged Foam-Lined Storage Case: Hard shell case with custom foam cutouts protects wrench insulation from impact damage during vehicle transit.

What's Included

  • (1) 3/8" 1000V Insulated Box End Wrench
  • (1) 7/16" 1000V Insulated Box End Wrench
  • (1) 1/2" 1000V Insulated Box End Wrench
  • (1) 9/16" 1000V Insulated Box End Wrench
  • (1) 5/8" 1000V Insulated Box End Wrench
  • (1) 11/16" 1000V Insulated Box End Wrench
  • (1) 3/4" 1000V Insulated Box End Wrench
  • (1) 13/16" 1000V Insulated Box End Wrench
  • (1) Heavy-Duty Foam-Lined Storage Carrying Case

Technical Specifications

Brand Manufacturer Klein Tools®
Model Part Number OEM SKU 47140INS
Tool Variant Type Heavy-Duty Insulated Box End Wrench Utility Set
Dielectric Insulation Rating 1000 Volts Maximum Compliance Shielding
SAE Wrench Size Range 3/8 in., 7/16 in., 1/2 in., 9/16 in., 5/8 in., 11/16 in., 3/4 in., 13/16 in.
Core Structural Material Forged Alloy Steel with Overmolded Dielectric Polymer Coating
Insulation Inspection Feature Three-Part Layer Matrix with White Inner Wear Indicator Layer
Box End Head Configuration Stepped Offset Clearance Profile
Total Component Kit Count 8 Individual Wrenches plus Foam-Lined Case
Total Combined Package Weight 6.40 lbs. (2.90 kg)
Compliance Safety Standards Meets or Exceeds ASTM F1505-16 and IEC 60900 Specifications

Pro-Tip: Before starting high-voltage utility work with your Klein 47140INS wrenches, conduct a pre-use inspection of the outer insulation. If the underlying white inner wear indicator layer shows through deep cuts or abrasion, take the wrench out of live-line service immediately to maintain 1000V shock isolation.