Overview
The LS GTK-22 thermal overload relay is a bimetallic motor protection device engineered for industrial automation, machine tools, and motor control applications. This class 10A relay combines thermal and overload protection with differential current and phase failure detection, ensuring reliable safeguarding of three-phase motors against sustained overloads and thermal faults.
Key Features
- Direct-mount compatibility with GM-9, 12, 18, and 22A contactor frames
- DIN rail or screw-mountable with optional AZ-22H base
- Class 10A trip rating with bimetallic tripping mechanism
- 1NO + 1NC trip contacts for flexible control logic
- Differential current and phase failure protection (GTK type)
- Trip-free design prevents bypass of protection
- Manual and automatic reset options
- Ambient temperature compensation (-5 to +40°C)
- Compact physical size: 44 mm wide
Technical Specifications
- Protection Type: Thermal overload with differential current detection
- Trip Class: 10A per IEC 60947-4-1
- Mounting: Direct-mount on GM-series contactors or DIN rail with AZ-22H
- Contacts: 1NO + 1NC trip contact block
- Reset Types: Manual and automatic selectable
- Operating Ambient: -5 to +40°C compensated
- Physical Width: 44 mm
- Tripping Mechanism: Bimetallic element
- Series: GTK-22
Typical Applications
- Three-phase motor protection in industrial machinery
- Machine tool control and safety circuits
- HVAC and pump motor protection
- General industrial automation systems
- OEM equipment integration with LS contactors
Compatibility & Replacements
Compatible With
- LS GM-9, GM-12, GM-18, GM-22 contactors
- Three-phase motor control circuits
- DIN rail installation with optional AZ-22H mounting base
- Industrial motor control centers and panels
Replaces / Drop-In Replacement For
- Other GTK-22 thermal overload relays with matching current ratings
- Verify your specific current rating before ordering
Works With
- LS electric motor starters and contactors
- Three-phase AC motor systems
- Standard motor control logic circuits
- Manual and programmable control systems
