ABB Overload Relays (OLRs) provide dependable protection for motors against overloads, phase failures, and overheating. Compact, adjustable, and easy to pair with ABB contactors, they ensure safe, efficient, and long-lasting motor performance across industrial, commercial, and infrastructure applications.
Description
Siemens Overload Relays are designed to protect motors from overloads, phase failures, and excessive heating. Compact and reliable, they integrate seamlessly with Siemens contactors to ensure safe and efficient motor operation in industrial and commercial systems.
Specifications
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Brand: Siemens
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Product Type: Overload Relay (OLR)
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Current Range: 0.1A – 630A (varies by model)
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Voltage: Up to 690V AC
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Trip Class: 10 / 20
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Protection: Overload, phase failure, locked rotor
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Reset: Manual / Automatic
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Mounting: Direct or separate with adapter
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Compliance: IEC 60947-4-1, UL, CSA
Features
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Adjustable current settings
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Compact and modular design
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Phase-loss sensitivity
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Manual/auto reset options
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Long service life
Applications
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Motor protection in industrial plants
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Pumps, fans, compressors
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HVAC systems
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Conveyors, cranes
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Process industries
Advantages
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Reliable motor protection
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Easy integration with Siemens starters
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Space-saving design
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Cost-effective
Disadvantages
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Limited to overload protection
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Bimetallic versions less precise
