---
product_id: 56749656
title: "Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm"
brand: "master lock"
price: "NT$992"
currency: TWD
in_stock: true
reviews_count: 10
category: "Master Lock"
url: https://www.desertcart.tw/products/56749656-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical
store_origin: TW
region: Taiwan
---

# Compatible with standard single & double toggles Slim 13x7x3 cm profile fits side-by-side breakers Hardened steel body for ultimate security Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm

**Brand:** master lock
**Price:** NT$992
**Availability:** ✅ In Stock

## Summary

> 🔐 Lock it down like a pro — safety that means business.

## Quick Answers

- **What is this?** Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm by master lock
- **How much does it cost?** NT$992 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/56749656-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical)

## 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

- • **Trusted by Pros:** Master Lock’s industry-leading reliability with 4.6-star rating from over 1,200 users.
- • **Space-Savvy Design:** Narrow profile allows seamless side-by-side lockouts without crowding your panel.
- • **Effortless Installation:** Secure and simple mounting mechanism for quick, reliable lockout every time.
- • **Lockout with Confidence:** Engineered hardened steel body ensures maximum durability and tamper resistance.
- • **Universal Compatibility:** Fits both single and double toggle breakers, streamlining your safety kit.

## Overview

The Master Lock 493B Grip Tight™ Circuit Breaker Lockout is a compact, hardened steel device designed for secure electrical lockouts on standard single and double toggle breakers. Its slim profile enables side-by-side installations, while the simple mounting system ensures fast, reliable use. Trusted by professionals and backed by high customer ratings, it’s an essential tool for workplace safety compliance.

## Description

Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm : desertcart.co.uk: Sports & Outdoors

Review: Isolation lock off device - Required to lock off mob isolator. Better designed mcb with locking capability would be better
Review: Sturdy - Good price to add to my kit

## Features

- narrow profile for side-by-side lock out
- secure and simple mounting for a solid lock out.
- body is made from hardened steel.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004J173I8 |
| Best Sellers Rank | 97,588 in DIY & Tools ( See Top 100 in DIY & Tools ) 104 in Circuit Breakers 31,463 in Hardware |
| Brand | Master Lock |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,239) |
| Date First Available | 10 Dec. 2011 |
| Item Weight | 50 g |
| Item model number | 493 |
| Manufacturer | Master Lock |
| Manufacturer part number | 493B |
| Model | Electrical Lockout Device |
| Product Dimensions | 3.81 x 21.34 x 21.59 cm; 50 g |
| Voltage | 240 Volts |

## Product Details

- **Brand:** Master Lock
- **Circuit breaker type:** Standard
- **Current rating:** 24 Amps
- **Mounting type:** Panel Mount
- **Product dimensions:** 7D x 13W x 3H centimetres

## Images

![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 1](https://m.media-amazon.com/images/I/41KEk6QWrzL.jpg)
![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 2](https://m.media-amazon.com/images/I/51A85UsUZrL.jpg)
![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 3](https://m.media-amazon.com/images/I/51HasiNsTJL.jpg)
![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 4](https://m.media-amazon.com/images/I/51Vts-91owL.jpg)
![Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm - Image 5](https://m.media-amazon.com/images/I/6145enWyiQL.jpg)

## Questions & Answers

**Q: I have v remote unoccupied house. area suffers power cuts so rcd or mcbs trip. could this be used to keep the mcb in on position?**
A: No this is to lock power off when working remote from the cumsumer unit your mcb . Rcbs are a reset able fuse to  protect your wiring so if your breaker are tripping  you have a fault if its the your plug side start  thinking what you are plugging in when it trip's or is it only one one socket As it could be appliances  on sockets or a problem  with a socket hope this helps

**Q: Can these be used to lock mcb in on position, where supply is for fire panel for instance? thanks**
A: MCBs must NEVER be locked in the ON position. They are a safety device for detecting overcurrent faults and are there to break the supply safely. If you fit any device which prevents the MCB turning off then the downstream wiring could overheat during a fault condition and this may actually cause a fire. If the MCB is tripping then please seek expert advice from an electrician, as your wiring or attached equipment has a fault and could be dangerous.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Isolation lock off device
*by S***S on 2 June 2021*

Required to lock off mob isolator. Better designed mcb with locking capability would be better

### ⭐⭐⭐⭐⭐ Sturdy
*by A***R on 11 March 2021*

Good price to add to my kit

### ⭐⭐⭐⭐⭐ Quick and easy
*by L***E on 5 May 2021*

Needed for MCCB’s

## Frequently Bought Together

- Master Lock Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B
- TRADESAFE Circuit Breaker Lockout Device, 3 Pack, 480/600 Volt, Clamp-on Breaker Lock Out Device, OSHA Compliant, Premium Grade, Large
- TRADESAFE Lockout Tagout Locks Set - 10 Red Loto Locks, Lockout Locks Keyed Different, 2 Keys Per Lock, OSHA Compliant Lock Out Tag Out Padlocks, Safety Padlocks for Electrical Lockout Tag Out Kits

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**Shop now:** [https://www.desertcart.tw/products/56749656-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical](https://www.desertcart.tw/products/56749656-master-lock-493b-grip-tight-circuit-breaker-lockout-for-electrical)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-02-01*