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Thermal Overload Relay 40-57A | 57A Max Current | IP00 Protection | Automatic Reset by Eaton
Thermal overload relay with adjustable current range from 40 A to 57 A and IP00 protection—ideal for industrial motor protection. Built for electrical control panels, it features automatic reset and phase-failure sensitivity for reliable operation.
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Product Name/Title: Thermal Overload Relay 40-57A | 57A Max Current | IP00 Protection | Automatic Reset by Eaton
Brand: Eaton
SKU: Y7-278459
Alternatively Known As: Thermal Overload Relay ZB65, Motor Overload Relay 40-57A, Eaton ZB Overload Relay
Technical Specifications
- Rated operational current (Ie) max: 57 A
- Adjustable current range: 40 A to 57 A
- Number of auxiliary contacts: 1 normally open, 1 normally closed
- Degree of protection: IP00
- Rated operational voltage (Ue) max: 690 V
- Rated impulse withstand voltage (Uimp): 4000 V (auxiliary/control circuits), 6000 V AC
- Short-circuit current rating (basic): 10 kA
- Mounting method: Direct mounting
- Reset function: Automatic push-button
- Electrical connection type: Screw connection
- Ambient operating temperature: -25 °C to 55 °C
- Pollution degree: 3
- Overvoltage category: III
- Terminal capacity (stranded): 1 x (16 - 25) mm² main cables
- Tightening torque: 3.5 Nm main cables, 1.2 Nm control circuit cables
- Dimensions (H x L x W): 75mm x 88mm x 60mm
- Weight: 0.23 kg
Key Features
- Adjustable current range from 40 A to 57 A
- Phase-failure sensitivity compliant with IEC/EN 60947
- Manual and automatic reset pushbutton
- Finger and back-of-hand proof protection against direct contact
- Screw connection type for main circuit
- Short-circuit current rating up to 100 kA (depending on fuse and circuit breaker)
- Operating ambient temperature range from -25 °C to 55 °C
Professional Installation Requirements
- Installation must be performed by a qualified electrician to ensure compliance with electrical safety standards and proper integration into motor control systems.
Applications
- Industrial motor protection
- Overload protection in electrical control panels
- Direct mounting in motor control circuits
Standards & Compliance
- Complies with AS/NZS 60950 – Safety of IT and Communication Equipment
- Complies with AS/NZS 3000 – Wiring Rules (Electrical Installation)
Environmental Benefits
- Helps prevent motor damage and energy waste by providing reliable overload protection
- Supports efficient motor operation and reduces downtime
Warranty Information
Standard Eaton warranty against manufacturing defects applies. Please refer to Eaton's official warranty policy for details.
Available Now
The Eaton Moeller ZB65-57 Thermal Overload Relay is available for immediate purchase, ideal for industrial motor protection and control panel applications.
