Product Description
The LOTO 403 RED Master Lock is a Lockout/Tagout (LOTO) safety padlock designed for industrial safety applications where machinery must be isolated during maintenance or servicing.
It is part of Master Lock’s LOTO safety lock series, used to prevent accidental startup of electrical or mechanical equipment.
Key Features
• Industrial Lockout/Tagout safety padlock
• Durable red non-conductive body (Zenex thermoplastic)
• Designed for electrical and mechanical isolation
• Lightweight and corrosion-resistant construction
• Key-retaining cylinder (key cannot be removed when unlocked)
• High security pin tumbler mechanism
• Non-sparking and non-magnetic materials
• Suitable for harsh industrial environments
• “One worker – one lock – one key” safety compliance design
• Available in keyed-different or keyed-alike systems
• Strong shackle resistance for safety applications
Specifications
• Product Type: Lockout/Tagout Safety Padlock
• Model: 403 RED (Master Lock LOTO series)
• Manufacturer: Master Lock
• Body Material: Zenex™ thermoplastic (industrial grade)
• Color: Red (safety identification standard)
• Shackle Type: Steel or non-conductive nylon (variant dependent)
• Shackle Clearance: Approx. 38mm (varies by model variant)
• Lock Mechanism: Pin tumbler (high security LOTO core)
• Key System: Key retaining/safety key system
• Temperature Resistance: -20°C to +120°C (typical LOTO range)
• Electrical Safety: Non-conductive body reduces shock risk
• Mounting Use: Equipment lockout points, switch isolation

