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1SAZ711201R1031 — Thermal overload relay
relayPart number: 1SAZ711201R1031
ABB 1SAZ711201R1031 is the T16-2.3 three-pole thermal overload relay, with an adjustable 1.7–2.3 A current setting and trip class 10. It provides motor overload protection with phase-loss sensitivity and features one normally closed trip contact, one normally open signalling contact, selectable manual or automatic reset, and STOP and TEST functions. Separate short-circuit protection is required.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAZ711201R1031 |
| Category | Electrical & controls |
| Time-Current Characteristic Curve | Tripping characteristic - Thermal overload relay T16-2.3 |
| Product Net Width | 45 mm |
| Product Net Height | 76.7 mm |
| Product Net Depth / Length | 53.5 mm |
| Product Net Weight | 0.1 kg |
| Setting Range | 1.7–2.3 A |
| Rated Operational Voltage | Main circuit: 690 V AC; auxiliary circuit: 600 V AC/DC |
| Rated Operational Current (I e ) | 2.3 A |
| Rated Frequency (f) | Main circuit: 50/60 Hz; auxiliary circuit: 50/60 Hz or DC |
| Rated Impulse Withstand Voltage (U imp ) | Auxiliary Circuit 6 kV |
| Rated Insulation Voltage (U i ) | 690 V |
| Number of Poles | 3 |
| Number of Auxiliary Contacts NC | 1 |
| Number of Auxiliary Contacts NO | 1 |
| Number of Protected Poles | 3 |
| Conventional Free-air Thermal Current (I th ) | Auxiliary Circuit NC 6 A |
| Rated Operational Current AC-15 (I e ) | (120 V) NC 3 A |
| Rated Operational Current DC-13 (I e ) | (125 V) NC 0.55 A |
| Degree of Protection | IP20 |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Connecting Capacity Main Circuit | Flexible with Ferrule 1/2x 0.75 ... 4 mm² |
| Tightening Torque | Auxiliary Circuit 1 ... 1.2 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Power Loss | at Rated Operating Conditions per Pole 1.1 ... 2.0 W |
| Maximum Operating Voltage UL/CSA | Main Circuit 600 V AC |
| Contact Rating UL/CSA | (NC:) B600 |
| Connecting Capacity Main Circuit UL/CSA | Flexible 1/2x 18-12 AWG |
| Connecting Capacity Auxiliary Circuit UL/CSA | Flexible 1/2x 18-12 AWG |
| Published component type | Thermal overload relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Trip Class | 10 |
| Auxiliary Contacts | 1 normally closed and 1 normally open |
| Reset Method | Selectable manual or automatic |
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 current range and trip class does the ABB T16-2.3 offer?
Part 1SAZ711201R1031 has an adjustable overload setting of 1.7–2.3 A and trip class 10. Check the motor nameplate current and starting requirements when selecting the relay.
Which contactors can the T16-2.3 mount directly onto?
ABB lists direct mounting on B6/BC6, B7/BC7, VB6/VBC6, VB7/VBC7 and AS09–AS16 contactors. Confirm the exact contactor and equipment details before ordering; provide the equipment serial number if fitment is uncertain.
Does the T16-2.3 protect against short circuits?
It provides thermal overload protection and is sensitive to phase loss, but it also requires separate short-circuit protection. Select the protective device and coordination for the actual installation using ABB documentation.
Can the T16-2.3 be reset manually or automatically?
Yes. The relay has selectable manual or automatic reset, along with trip indication and STOP and TEST functions. The control system must be designed to prevent an unsafe automatic restart.
What auxiliary contacts are provided on the T16-2.3?
The relay has one normally closed trip contact, terminals 95–96, and one normally open signalling contact, terminals 97–98. Check the control circuit ratings for the intended voltage and duty.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.