---
product_id: 55329449
title: "491B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Large and High Breakers, 13 x 7 x 2 cm"
brand: "master lock"
price: "$52"
currency: NZD
in_stock: true
reviews_count: 5
category: "Master Lock"
url: https://www.desertcart.nz/products/55329449-491b-grip-tight-circuit-breaker-lockout-for-electrical-lockout-on
store_origin: NZ
region: New Zealand
---

# Fits large/high breakers with secure, simple mounting Hardened steel body for unbreakable security Zenex composite resists chemicals & extreme temps (-57°C to 182°C) 491B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Large and High Breakers, 13 x 7 x 2 cm

**Brand:** master lock
**Price:** $52
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock it down like a pro — safety that speaks volumes!

## Quick Answers

- **What is this?** 491B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Large and High Breakers, 13 x 7 x 2 cm by master lock
- **How much does it cost?** $52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/55329449-491b-grip-tight-circuit-breaker-lockout-for-electrical-lockout-on)

## Best For

- master lock enthusiasts

## Why This Product

- Trusted master lock brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Portable:** Lightweight and easy to carry, perfect for professionals on the move who demand efficiency.
- • **Rock-Solid Security:** Hardened steel construction delivers maximum protection against tampering and accidental disengagement.
- • **Unmatched Durability:** Zenex composite body engineered to withstand harsh chemicals and extreme temperatures, ensuring reliability in any environment.
- • **Effortless Installation:** Designed for quick, secure mounting on large and high circuit breakers, saving you time on the job.
- • **Trusted Industry Standard:** Backed by Master Lock’s legacy and a 4.6-star rating from hundreds of users, join the elite who never compromise on safety.

## Overview

The Master Lock 491B Grip Tight™ Circuit Breaker Lockout is a professional-grade safety device designed for large and high circuit breakers. Featuring a chemically resistant Zenex composite body that endures extreme temperatures from -57°C to 182°C, and a hardened steel core for unbeatable security, it ensures a solid lockout every time. Compact, portable, and easy to mount, it’s trusted by professionals worldwide to maintain workplace safety and compliance.

## Description

Master Lock 491B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Large and High Breakers, 13 x 7 x 2 cm : desertcart.co.uk: DIY & Tools

Review: Muy buen producto para el trabajo
Review: Commande reçu à temps et quantité exact contrairement à d’autre. Top top

## Features

- Zenex composite body, which withstands chemicals and extreme temperatures ranging from -57 to 182
- have a secure and simple mounting for a solid lock out.
- body is made from hardened steel.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004J173HY |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 304,510 in DIY & Tools ( See Top 100 in DIY & Tools ) 667 in Combination Padlocks |
| Colour | Red & Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (290) |
| Date First Available | 10 Dec. 2011 |
| Finish | Powder Coated |
| Included Components | Electrical Lockout Device |
| Item Package Quantity | 1 |
| Item Weight | 45.4 g |
| Item model number | 491B |
| Manufacturer | Master Lock |
| Material | Steel |
| Measurement System | US |
| Part Number | 491B |
| Plug profile | DIN Rail Mount |
| Product Dimensions | 10.16 x 5.08 x 2.54 cm; 45.36 g |
| Shape | Square |
| Size | 14.7 cm x 8.4 cm x 3.4 cm |
| Special Features | portable |
| Style | For wide or high toggle switches |
| Usage | Outside, Outside; Professional |
| Voltage | 120 Volts |

## Product Details

- **Brand:** Master Lock
- **Circuit breaker type:** Standard
- **Mounting type:** DIN Rail Mount
- **Product dimensions:** 7D x 13W x 2H centimetres
- **UPC:** 712760524589 789164007574 094704338163 071649229718

## Images

![491B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Large and High Breakers, 13 x 7 x 2 cm - Image 1](https://m.media-amazon.com/images/I/61GT6MscUTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by E***. on 4 June 2025*

Muy buen producto para el trabajo

### ⭐⭐⭐⭐⭐ Review
*by H***F on 1 September 2024*

Commande reçu à temps et quantité exact contrairement à d’autre. Top top

### ⭐⭐⭐⭐⭐ Review
*by R***R on 19 December 2019*

Worked perfectly for my job. Allowed me to lock out 575v circuit breaker without problems

## Frequently Bought Together

- Master Lock 491B Lockout Tagout Circuit Breaker Lockout, Tall and Wide Toggles, Red
- Master Lock Red Lockout Tagout Safety Padlock with Key, Metal Shackle and Non-Conductive Lock Body for Electrical Applications, 410RED
- Master Lock Safety Series 1' Jaw Steel Lockout Hasp

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**Shop now:** [https://www.desertcart.nz/products/55329449-491b-grip-tight-circuit-breaker-lockout-for-electrical-lockout-on](https://www.desertcart.nz/products/55329449-491b-grip-tight-circuit-breaker-lockout-for-electrical-lockout-on)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-07*