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ABB EF460-500 1SAX721001R1101 – Advanced Electronic Overload Relay for Motor Protection

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The ABB EF460-500, model 1SAX721001R1101, is a premium industrial-grade electronic overload relay designed for robust motor protection against overloads and phase failures. Ideal for a variety of heavy-duty applications across manufacturing, this self-powered relay ensures reliable operation without external power supplies.

Self-powered Design:No external power supply needed

Protection Range:150A to 500A

Classes:10, 20, 30

Operating Temperature:-20°C to +60°C

Accuracy:High accuracy for precise monitoring

Configuration Range:Wide range of configurations

Temperature Compensation:Adjusts for temperature variations

Trip Contact:NC (Normally Closed)

Signal Contact:NO (Normally Open)

Reset Options:Manual or automatic

Non-trip Mechanism:Prevents false trips

STOP & Test Function:Ensures safe system operation

Trip Indication:Visual confirmation of overload

    The ABB EF460-500 1SAX721001R1101 Electronic Overload Relay offers a comprehensive solution for motor protection, boasting a wide configuration range that caters to diverse industrial needs. Its self-powered design eliminates the need for an external power supply, ensuring reliability and ease of integration.

    With a broad protection range from 150A to 500A, this relay is capable of safeguarding motors against various overloading scenarios, thereby preventing damage and ensuring operational efficiency. The adjustable overload classes (10, 20, 30) allow users to fine-tune protection levels according to their specific requirements.

    Equipped with temperature compensation technology, the EF460-500 ensures accurate performance across varying ambient temperatures. This feature is particularly advantageous in environments where temperature fluctuations can impact the functionality of protective devices.

    Offering a choice between automatic and manual reset mechanisms, the relay provides flexibility in managing fault recovery processes. This enables operators to choose the most suitable option based on their operational protocols and safety standards.

    Operating within a temperature range of -40°C to +60°C, the EF460-500 is designed for extreme conditions commonly encountered in industrial settings. Its compatibility with ATEX and IECEx standards further enhances its suitability for hazardous locations, ensuring compliance with global safety regulations.

ABB EF460-500 1SAX721001R1101  Electronic Overload Relay




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