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?

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

Can these be used to lock mcb in on position, where supply is for fire panel for instance? thanks

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.

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Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm

Master Lock 493B Grip Tight™ Circuit Breaker Lockout for Electrical Lockout on Standard Single and Double Toggles, 13 x 7 x 3 cm

Product ID: 56749656

Details

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

⚡Supports up to 24 Amps for standard electrical panels

📏Compact 13x7x3 cm narrow profile fits side-by-side breakers

🔒Hardened steel body for ultimate security

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4865 som

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In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔐 Lock it down, stand out on site!

UNIVERSAL FIT - Compatible with standard single and double toggle breakers, making it the go-to for any electrical lockout scenario.
TRUSTED TESTED - Backed by Master Lock’s legacy and a 1-year warranty, join thousands of pros who rely on this essential safety tool.
BUILT TO WITHSTAND - Crafted from hardened steel, this lockout device guarantees durability and tamper resistance on every job.
LOCKOUT LIKE A PRO - Slim, narrow profile designed for seamless side-by-side breaker lockouts—maximize your panel space.
EFFORTLESS SECURITY - Simple, secure mounting ensures a rock-solid lockout in seconds—no fuss, no compromises.

The Master Lock 493B Grip Tight™ Circuit Breaker Lockout is a compact, hardened steel device engineered for secure electrical lockouts on standard single and double toggle breakers. Measuring 13 x 7 x 3 cm, it fits side-by-side breakers effortlessly and supports up to 24 Amps. Designed for quick, reliable mounting, it offers professionals a durable, trusted solution backed by a 1-year warranty.

Specifications

ASIN	B004J173I8
Best Sellers Rank	126,449 in DIY & Tools ( See Top 100 in DIY & Tools ) 196 in Circuit Breakers 40,936 in Hardware
Brand	Master Lock
Circuit Breaker Type	Standard
Country Of Origin	China
Current Rating	24 Amps
Customer Reviews	4.6 4.6 out of 5 stars (1,279)
Global Trade Identification Number	00071649229725
Included Components	Electrical Lockout Device
Item Dimensions D x W x H	7D x 13W x 3H centimetres
Item Type Name	493B Grip Tight™ Circuit Breaker Lockout
Item Weight	0.05 Kilograms
Manufacturer	Master Lock
Manufacturer Part Number	493B
Model Number	493
Mounting Type	Panel Mount
Product Warranty	1 year
Smart Home Compatibility	Not Smart Home Compatible
UPC	071649229725
Unit Count	1.0 count
Voltage	240 Volts

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