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1SAZ311201R1003 — TA42DU-42 Thermal Overload Relay 29 ... 42 A
relayPart number: 1SAZ311201R1003
ABB TA42DU-42 (1SAZ311201R1003) is a three-pole thermal overload relay with a 29–42 A adjustable current setting and trip class 10A. It provides motor overload and phase-loss protection, with selectable manual or automatic reset, temperature compensation, trip indication and auxiliary contacts.
Looking for ABB 1SAZ311201R1003? This catalogue reference is listed under relay. Send the part number and your equipment details so we can confirm the specification, availability and a quotation including shipping.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ311201R1003 |
| Category | Electrical & controls |
| Published component description | TA42DU-42 Thermal Overload Relay 29 ... 42 A |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Current setting range | 29–42 A |
| Trip class | 10A |
| Number of poles | 3 |
| Auxiliary contacts | 1 normally open and 1 normally closed |
| Reset mode | Selectable manual or automatic |
| Main circuit rated operational voltage | 690 V AC (IEC/EN) |
| Rated frequency | DC, 50/60 Hz |
| Ambient operating temperature | −25 to +55 °C |
| Temperature compensation | Yes |
| Net weight | 0.335 kg |
| Net dimensions (width × height × depth) | 54 × 90 × 111 mm |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
What is the current setting range of the TA42DU-42?
The adjustable overload setting range is 29–42 A. Check the motor nameplate current and the starter configuration when selecting the relay; 42 A is the upper setting, not a fixed trip current.
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What trip class and motor protection does 1SAZ311201R1003 provide?
This three-pole thermal relay is trip class 10A and provides motor overload protection with phase-loss sensitivity. Verify the required trip class and starting conditions for the motor.
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Does the TA42DU-42 offer manual and automatic reset?
Yes. Manual or automatic reset is selectable. The relay also has stop and test functions, a trip indicator, one normally closed trip contact and one normally open signal contact.
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Does this overload relay provide short-circuit protection on its own?
No. The overload relay must be combined with suitable short-circuit protection. The appropriate protective device depends on the circuit and applicable ratings; have the complete coordination verified.
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Can the TA42DU-42 be mounted separately from a contactor?
Yes. It can be mounted on a contactor or separately using the ABB DB80 single-mounting kit. Confirm the contactor model, equipment serial number where available, and mounting arrangement before ordering.
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Research information may be outdated. Confirm fitment and specifications with our team before ordering.