






🔐 Lock it tight, work right — don’t get left unprotected!
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. Measuring 13 x 7 x 3 cm and weighing only 50g, it offers a narrow profile for side-by-side installations and supports up to 240 volts, ensuring reliable, OSHA-compliant safety for professional electrical maintenance.








| Manufacturer | Master Lock |
| Brand | Master Lock |
| Model | Electrical Lockout Device |
| Product Dimensions | 3.81 x 21.34 x 21.59 cm; 50 g |
| Item model number | 493 |
| Manufacturer part number | 493B |
| Voltage | 2.4E+2 Volts |
| Item Weight | 50 g |
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