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Thermal overload relays

ABB Thermal Overload Relays TA and TF Series are engineered to protect motors against overload, phase failure, and prolonged overcurrent conditions. Operating on a reliable bimetallic thermal tripping mechanism, they disconnect the motor circuit before overheating damage occurs. These relays feature temperature compensation for stable trip accuracy, a trip contact (NC) and signal contact (NO) for monitoring, selectable automatic or manual reset, trip-free mechanism, integrated STOP and Test function, and clear trip indication. Compared to standard alternatives, they provide consistent performance, higher operational reliability, and seamless integration with ABB contactors. 

Rated Operational Voltage: Up to 690V AC, 50/60 Hz

Current Setting Range: Model dependent adjustable range

Tripping Class: Class 10A

Mounting: Direct mounting on ABB contactors or DIN rail with Mounting Kit

Auxiliary Contacts: 1 NC (Trip Contact) + 1 NO (Signal Contact)

Electronic overload relays

ABB Electronic Overload Relays are designed to provide accurate and reliable motor protection against overload, phase failure, and abnormal current conditions. These relays incorporate temperature compensation for stable operation under varying ambient conditions. Key features include trip contact (NC), signal contact (NO), selectable automatic or manual reset, trip-free mechanism, integrated STOP and Test function, and clear trip indication.

Rated Operational Voltage: Up to 690V AC, 50/60 Hz
Trip Class: 10E / 20E / 30E
Protection Functions: Overload, Phase Failure, Current Imbalance
Auxiliary Contacts: 1 NC (Trip Contact) + 1 NO (Signal Contact)
Reset Mode: Selectable Manual or Automatic
Mounting: Contactor mounting or DIN rail with Mounting Kit
Standards Compliance: IEC 60947-4-1

Mounting Kit for Overload relays

ABB Mounting Kit for Overload Relays is designed to provide secure and precise installation support for ABB thermal and electronic overload relays. This accessory enables proper mechanical alignment and stable fixation within motor starters and control panels. Engineered for compatibility with ABB TA, TF, and electronic overload relay series, it ensures quick assembly, compact integration, and reliable positioning. Compared to generic mounting solutions, it offers accurate fitment, durable construction, and improved installation efficiency. Suitable for motor control centers, industrial automation panels, OEM machinery, and retrofit applications.

Compatibility: ABB TA & TF Series Thermal overload relays, and Electronic Overload Relays

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Ordering Code
relay range in amps suitable contactor types trip class Qty Accessories Enq
E16DU 0.32

E16DU 0.32

0.1... 0.32A

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E16DU 1.0

E16DU 1.0

0.3 ... 1.0A

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E16DU 2.7

E16DU 2.7

0.8 ... 2.7A

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E16DU 6.3

E16DU 6.3

1.9 ... 6.3A

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E16DU 18.9

E16DU 18.9

5.7... 18.9A

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E45DU 30

E45DU 30

9 ... 30A

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E45DU 45

E45DU 45

15 ... 45A

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E80DU 80

E80DU 80

27 ... 80A

A50 ... A75

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E140DU 140

E140DU 140

50 ... 140A

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EF205-210

EF205-210

63 ... 210A

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EF370-380

EF370-380

115 ... 380A

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EF460

EF460

150 ... 500A

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EF750

EF750

250 ... 800A

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E1250DU 375 - 1250 A

E1250DU 375 - 1250 A

375 ... 1250A

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EF19-0.32

EF19-0.32

0.10…0.32A

AF09 ... AF16

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EF19-1.0

EF19-1.0

0.30…1.00A

AF09 ... AF16

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EF19-2.7

EF19-2.7

0.80…2.70A

AF09 ... AF16

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EF19-6.3

EF19-6.3

1.90…6.30A

AF09 ... AF16

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EF19-18.9

EF19-18.9

5.70…18.9A

AF09 ... AF16

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EF45-30

EF45-30

9.00…30.0A

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EF45-45

EF45-45

15.0…45.0A

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EF65-70

EF65-70

25…70A

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EF96-100

EF96-100

36…100A

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EF146-150

EF146-150

54…150A

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Additional information for Electronic overload relays

ABB Electronic overload relays

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