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1SAZ211201R1025
ABB 1SAZ211201R1025 available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The ABB 1SAZ211201R1025, also known as TA25DU-1.8, is a thermal overload relay designed for dependable motor protection in industrial control circuits. It provides electromechanical protection against overload and phase failure, helping to prevent excessive current from damaging connected motors.
This relay has an adjustable current setting range of 1.3 to 1.8 A and a rated operational current of 1.8 A, making it suitable for lower-current motor applications. It features trip class 10A operation, temperature compensation, a trip-free mechanism, selectable manual or automatic reset, STOP and test functions, and clear trip indication.
The 1SAZ211201R1025 includes one normally open and one normally closed auxiliary contact for signalling and control integration. It is designed for direct connection to compatible ABB block contactors, including A and AL series contactors, and is commonly used in motor starter assemblies, control panels and low-voltage automation systems. Its compact construction, IP20 housing protection and compliance with IEC/EN and UL standards make it a practical choice for industrial motor control applications.
This relay has an adjustable current setting range of 1.3 to 1.8 A and a rated operational current of 1.8 A, making it suitable for lower-current motor applications. It features trip class 10A operation, temperature compensation, a trip-free mechanism, selectable manual or automatic reset, STOP and test functions, and clear trip indication.
The 1SAZ211201R1025 includes one normally open and one normally closed auxiliary contact for signalling and control integration. It is designed for direct connection to compatible ABB block contactors, including A and AL series contactors, and is commonly used in motor starter assemblies, control panels and low-voltage automation systems. Its compact construction, IP20 housing protection and compliance with IEC/EN and UL standards make it a practical choice for industrial motor control applications.
| Specification | Description |
|---|---|
| Manufacturer | ABB |
| Part Number | 1SAZ211201R1025 |
| Product Type | Thermal overload relay |
| Model / Product Name | TA25DU-1.8 |
| Extended Product Type | TA25DU-1.8 |
| Function | Electromechanical motor protection device for overload and phase-failure conditions in the main circuit |
| Setting Range | 1.3 to 1.8 A |
| Rated Operational Current | 1.8 A |
| Trip Class | Class 10A |
| Number of Poles | 3 |
| Protected Poles | 3 |
| Auxiliary Contacts | 1 normally open and 1 normally closed |
| Reset Type | Selectable automatic or manual reset |
| Main Circuit Rated Operational Voltage | 690 V AC |
| Auxiliary Circuit Rated Operational Voltage | 440 V DC / 500 V AC |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | 6 kV for main and auxiliary circuits |
| Rated Frequency | 50 Hz, 60 Hz and DC operation supported |
| Degree of Protection | Housing IP20; main circuit terminals IP10 |
| Pollution Degree | 3 |
| Main Circuit Connection Capacity | Flexible or rigid conductors from 0.75 to 4 mm², including ferruled options |
| Auxiliary Circuit Connection Capacity | Flexible conductors from 0.75 to 2.5 mm² and rigid conductors from 0.75 to 4 mm² |
| Wire Stripping Length | 12 mm for main circuit; 9 mm for auxiliary circuit |
| Tightening Torque | 1.5 to 1.9 N·m for main circuit; 1.0 to 1.3 N·m for auxiliary circuit |
| Recommended Screwdriver | Pozidriv 2 for main circuit; Pozidriv 1 for auxiliary circuit |
| Mounting Position | Positions 1 to 4 |
| Suitable Contactors | A9, A12, A16, A26, A30, A40, AL9, AL12, AL16, AL26, AL30 and AL40 |
| Operating Temperature | -25 to +55 °C |
| Storage Temperature | -40 to +70 °C |
| Temperature Compensation | Included |
| Maximum Operating Altitude | 2000 m |
| Shock Resistance | 11 ms pulse at 12g according to IEC 60068-2-27 |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1, UL 60947-1 and UL 60947-4-1 |
| Product Dimensions | 44 mm wide, 80 mm high and 94 mm deep |
| Net Weight | 0.15 kg |
| Package Quantity | 1 piece |
| Package Dimensions | 98 mm wide, 82 mm high and 47 mm deep |
| Package Gross Weight | 0.17 kg |
| EAN | 4013614216534 |
| Customs Tariff Number | 85364900 |
| Commodity Code | 853641 |
| Classification | EC000106 thermal overload relay |
What type of device is this?
This is a thermal overload relay used to help protect electric motors from overload conditions and phase failure in low-voltage control circuits.
What current range can it be set to?
The relay has an adjustable setting range of 1.3 to 1.8 A, making it suitable for motors with a full-load current within that range.
What is the rated operational current?
The rated operational current is 1.8 A, including for AC-3 applications.
How many poles does this overload relay protect?
It is a 3-pole thermal overload relay and protects all three main circuit poles.
What auxiliary contacts are included?
The relay includes 1 normally closed auxiliary contact and 1 normally open auxiliary contact for trip and signalling functions.
What trip class does it use?
It uses trip class 10A, which is commonly used for standard motor overload protection where fast response to overload conditions is required.
Can it be reset manually or automatically?
Yes. The relay has selectable manual or automatic reset, allowing it to be configured to suit the control panel design.
What contactors is it suitable for?
It is suitable for use with A9, A12, A16, A26, A30, A40, AL9, AL12, AL16, AL26, AL30 and AL40 block contactors.
What are the main dimensions?
The product measures approximately 44 mm wide, 80 mm high and 94 mm deep, with a net weight of about 0.15 kg.
What voltage ratings does it have?
The main circuit is rated up to 690 V AC, while the auxiliary circuit is rated up to 500 V AC or 440 V DC.
What degree of protection does the housing provide?
The housing is rated IP20, while the main circuit terminals are rated IP10.
What ambient temperature range is it designed for?
It is designed for operation from -25 °C to +55 °C and storage from -40 °C to +70 °C.
What cable sizes can be connected to the main circuit?
The main circuit accepts flexible or rigid conductors from 0.75 to 4 mm², including ferruled flexible conductors within the same range.
What tightening torque should be used?
The recommended tightening torque is 1.5 to 1.9 N·m for the main circuit and 1.0 to 1.3 N·m for the auxiliary circuit.
What standards is it designed to meet?
It is listed against IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1, UL 60947-1 and UL 60947-4-1 standards.
- Motor overload protection in industrial control panels
- Phase failure protection for three-phase motor circuits
- Direct mounting with compatible ABB block contactors
- Pump, fan and compressor motor starter assemblies
- Conveyor and materials handling control systems
- Machine tool and production line motor protection
- HVAC motor control applications using low current motors
- Control cabinet installations requiring manual or automatic reset
- Protection of motors with full-load current settings from 1.3 to 1.8 A
- Signalling and trip indication through integrated 1NO and 1NC auxiliary contacts
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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