---
product_id: 312329391
title: "Master Lock Electrical Device 491B Grip Tight Circuit Breaker Lockout, Red & Black, 14.7 cm x 8.4 cm x 3.4 cm"
brand: "master lock"
price: "₹ 155"
currency: INR
in_stock: false
category: "Master Lock"
url: https://www.desertcart.in/products/312329391-master-lock-electrical-device-491b-grip-tight-circuit-breaker-lockout
store_origin: IN
region: India
---

# Fits hi-voltage breakers Universal padlock compatibility Durable powder-coated steel Master Lock Electrical Device 491B Grip Tight Circuit Breaker Lockout, Red & Black, 14.7 cm x 8.4 cm x 3.4 cm

**Brand:** master lock
**Price:** ₹ 155
**Availability:** ❌ Out of Stock

## Summary

> 🔐 Lock it tight, work with confidence — never compromise on safety!

## Quick Answers

- **What is this?** Master Lock Electrical Device 491B Grip Tight Circuit Breaker Lockout, Red & Black, 14.7 cm x 8.4 cm x 3.4 cm by master lock
- **How much does it cost?** ₹ 155 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/312329391-master-lock-electrical-device-491b-grip-tight-circuit-breaker-lockout)

## 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 Powerhouse:** Slim, lightweight design (181g) that’s easy to carry and store without sacrificing strength.
- • **Secure Grip, Zero Slip:** Patented thumb-turn and clamping handle lockout for a rock-solid hold on wide or tall breaker toggles.
- • **Built to Brave Extremes:** Zenex composite body resists chemicals and temperatures from -57°C to 182°C, perfect for harsh industrial environments.
- • **Engineered for Professionals:** Hardened steel body and snap-in mount ensure reliable, long-lasting circuit breaker lockout every time.
- • **Universal Lock Compatibility:** Accepts all American Lock® and Master Lock® safety padlocks and most lockout hasps for seamless integration.

## Overview

The Master Lock 491B Grip Tight Circuit Breaker Lockout is a compact, durable device designed to securely lock out hi-voltage and hi-amperage circuit breakers. Featuring a patented thumb-turn and clamping handle mechanism, it fits wide or tall breaker toggles and accepts all major safety padlocks. Built with a hardened steel body and chemical-resistant Zenex composite, it withstands extreme temperatures and harsh environments, making it an essential tool for professional electrical safety compliance.

## Description

Product Description The Master Lock No. 491B Grip Tight Circuit Breaker Lockout Device fits wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers. The innovative patented Grip Tight design effectively locks out circuit breakers with a simple thumb turn and then close clamping handle for a tight grip on the toggle. Device accepts all American Lock® and Master Lock® safety padlocks and most lockout hasps for full lockout. Durable construction stands up in harsh environments and compact design is easy to carry and store. Set Contains: 1 x Master Lock Lockout Circuit Breaker Small

## Features

- Fits wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers
- Adjust to breaker with simple thumb turn and then close clamping handle for a tight grip on the toggle
- Durable construction with powder coated steel and reinforced polymer for operation in harsh environments
- Compact lockout device is easy to carry and easy to store
- Accepts all American Lock and Master Lock safety padlock shackles and lockout hasp diameters.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 |
| Best Sellers Rank | #206,494 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #498 in Keyed Padlocks |
| Brand Name | Master Lock |
| Circuit Breaker Type | Standard |
| Current Rating | 2 Amps |
| Customer Reviews | 4.6 4.6 out of 5 stars (505) |
| Global Trade Identification Number | 00071649229718, 00712760524589 |
| Included Components | industrial-warning-signs |
| Item Dimensions D x W x H | 51D x 25W x 25H millimeters |
| Item Type Name | 491B Grip Tight™ Circuit Breaker Lockout |
| Item Weight | 181 g |
| Manufacturer | National Marker Corporation |
| Model | 491B |
| Mounting Type | Snap-In Mount |
| Number of Items | 1 |
| Number of Poles | 1 |
| Part Number | 491B |
| UPC | 712760524589 789164007574 094704338163 071649229718 |
| Unit Count | 1 Count |
| Voltage | 120 Volts |

## Product Details

- **Brand:** Master Lock
- **Circuit breaker type:** Standard
- **Current rating:** 2 Amps
- **Mounting type:** Snap-In Mount
- **Product dimensions:** 51D x 25W x 25H millimeters

## Images

![Master Lock Electrical Device 491B Grip Tight Circuit Breaker Lockout, Red & Black, 14.7 cm x 8.4 cm x 3.4 cm - Image 1](https://m.media-amazon.com/images/I/61GT6MscUTL.jpg)

## Available Options

This product comes in different **Size** options.

## 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.in/products/312329391-master-lock-electrical-device-491b-grip-tight-circuit-breaker-lockout](https://www.desertcart.in/products/312329391-master-lock-electrical-device-491b-grip-tight-circuit-breaker-lockout)

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*Product available on Desertcart India*
*Store origin: IN*
*Last updated: 2026-10-08*