ABB 1SAZ211201R2028 Thermal Overload Relay

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Product Overview:
The ABB 1SAZ211201R2028 is an industrial-grade thermal overload relay designed to protect motors from overload or overheating. It senses current through a thermal element and disconnects the circuit in time to prevent motor damage. Featuring a wide adjustment range, reliable operation, and easy installation, it is an essential component for motor protection and control systems.

Technical Specifications:

• Model: 1SAZ211201R2028

• Type: Thermal Overload Relay

• Current Range: 0.16–0.25 A

• Rated Voltage: AC 600 V / DC 250 V

• Poles: 3

• Function: Motor overload protection, phase failure protection

• Adjustment Range: 0.16–0.25 A

• Operation Type: Thermal-mechanical

• Reset Type: Manual / Automatic optional

• Mounting: With contactor or standalone

• Certification: CE, IEC 60947-4-1

Advantages and Features:

1. High Reliability: Industrial-grade thermal element ensures long-term motor safety.

2. Accurate Overload Protection: Sensitive operation effectively prevents motor overheating and damage.

3. Phase Failure Protection: Automatically disconnects the circuit in case of phase loss.

4. Adjustable Current Range: Suitable for protecting motors of different ratings.

5. Easy Installation: Can be mounted with contactors or installed independently.

Applications:

• Industrial motor protection

• Production line machinery

• HVAC system motor protection

• Pumps, fans, and compressors

• Factory automation control systems

Precautions:

1. Ensure rated current matches the motor before installation.

2. Avoid use in high temperature, high humidity, or corrosive environments.

3. Regularly check the relay and wiring to ensure reliable operation.

4. Do not disassemble the relay without authorization to prevent compromising performance and safety.

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