Master LockElectrical Device 493B Grip Tight Circuit Breaker Lockout, Red & Black, 11.3 cm x 6.9 cm x 2.5 cm

Master LockElectrical Device 493B Grip Tight Circuit Breaker Lockout, Red & Black, 11.3 cm x 6.9 cm x 2.5 cm

Q: Will these fit double pole breakers or just single pole?

It would fit over one side of most 2-pole breakers, which would, in effect, lock out the breaker. This does not fit some larger 277V breakers.

Q: Can this be knocked off with a hammer or pried off with a screwdriver? I need it to be secure!

All the person you’re trying to prevent from using the electrical needs to do is remove the entire circuit breaker that has the lock on it and replace it with another breaker to continue to use electricity. Not even locking the wall panel will help, the cover is held on with 4 screws Your only opinion you have left is to place a metal cap over the breaker switch and connect the metal cap to the 220 feed leading into the panel

Q: how wide does the jaws open?

It's ment for a breaker. It will fit any breaker from the main power to the 15 and 20 amp ones

Q: i need a device to lock breaker in on position to insure our church organ is not turned off accidently can i reverce this device to use it that way???

This device is probably not what you want---it is intended to lock a circuit breaker in the "OFF" position for safe-maintenance situations...they make a breaker lock intended for locking a breaker in the "ON" position...it is intended for applications such as you describe---an alarm system, eg.,...the breaker will still trip if overloaded, but cannot be turned off by accident or un-authorized personnel.

4.6/5

Product ID: 312329399

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Details

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

⚡Fits 120V & 240V breakers

🔒Universal padlock compatibility

🛠️Durable powder-coated steel

Frequently Bought Together

Master Lock Red Electrical Box Circuit Breaker Lockout, Tagout Breaker Box Lock for Standard Single and Double Toggles, 493B

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

Description

🔐 Lock in safety, unlock peace of mind.

LOCK IT YOUR WAY - Compatible with all American Lock and Master Lock shackles and lockout hasps for ultimate security.
COMPACT POWERHOUSE - Slim, lightweight design makes it effortlessly portable and easy to store.
SIDE BY SIDE READY - Narrow profile allows multiple lockouts without crowding—perfect for team safety compliance.
PRECISION FIT ZERO SLIP - Adjusts with a simple thumb turn for a rock-solid grip on standard breaker toggles.
BUILT TO BRAVE HARSH CONDITIONS - Powder-coated steel and reinforced polymer ensure longevity in demanding environments.

The Master Lock 493B Grip Tight Circuit Breaker Lockout is a compact, durable device designed to securely lock standard 120V and 240V circuit breakers. Featuring a powder-coated steel body and reinforced polymer, it withstands harsh environments while offering universal compatibility with American and Master Lock padlocks. Its slim profile and easy thumb-turn adjustment make it an essential tool for professional safety compliance and efficient lockout/tagout procedures.

Specifications

Manufacturer	Master Lock
Brand	Master Lock
Model	Electrical Lockout Device
Product Dimensions	3.81 x 21.34 x 21.59 cm; 59.12 g
Item model number	493
Manufacturer Part Number	MasterLock 493B
Voltage	2.4E+2 Volts
Item Weight	59.1 g

Have a Question? See What Others Asked

Will these fit double pole breakers or just single pole?

Can this be knocked off with a hammer or pried off with a screwdriver? I need it to be secure!

how wide does the jaws open?

i need a device to lock breaker in on position to insure our church organ is not turned off accidently can i reverce this device to use it that way???

Common Questions

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Good experience, but the tracking updates could be better.

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