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ABB 1SAZ741201R1021
TF42-0.74B Thermal Overload Relay 0.55 ... 0.74 A
- MPN
- 1SAZ741201R1021
- EAN
- 4013614517075
- Category
- ABB Thermal Overload Relays
Price and lead time confirmed within 1 business day
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- 12-month warranty (new) · 3-month (used/refurbished)
- 30-day returns, no restocking fee on unused parts
- Ships via
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What is the ABB 1SAZ741201R1021?
The TF42-B thermal overload relays are economic electromechanical protection devices for the main circuit, complying with the latest railway rolling stock standards and allowing installation in passengers or driver cabins for trains frequently operating tunnels or undergrounds.
They offer a reliable protection for motors in the event of overload or phase failure. The devices have trip
class 10.
The thermal overload relays are three pole relays with bimetal tripping elements. The motor current flows
through the bimetal tripping elements and heats them directly and indirectly. In case of an overload (over
current), the bimetal elements bent as a result of the heating. This leads to a release of the relay and a
change of the contacts switching position (95-96 / 97-98).
– Manual or automatic reset selectable
– Phase loss sensitive acc. to IEC/EN 60947-4-1
– TEST and STOP function – Trip indication on the front
– Temperature compensation
– Suitable for three- and single-phase applications
– designed in accordance to the applicable parts of IEC 60077 standard
– shocks and vibration withstand conforming to IEC 61373 (category 1, class B)
– usable according to European fire and smoke safety standard EN 45545-2
Specifications
General
| Order code (ABB product ID) | 1SAZ741201R1021 |
| Type | TF42-0.74B |
| Lifecycle | Active (current ABB product) |
Ordering
| Minimum Order Quantity | 1 piece |
| Customs Tariff Number | 85364900 |
Dimensions
| Product Net Width | 45 mm |
| Product Net Height | 88.3 mm |
| Product Net Depth / Length | 70.5 mm |
| Product Net Weight | 0.13 kg |
Technical
| Setting Range | 0.55 ... 0.74 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC, Main Circuit 690 V AC |
| Rated Operational Current (I<sub>e</sub>) | 0.74 A |
| Rated Frequency (f) | Auxiliary Circuit 50 Hz, Auxiliary Circuit 60 Hz, Auxiliary Circuit DC, Main Circuit 50 Hz, Main Circuit 60 Hz |
| Rated Impulse Withstand Voltage (U<sub>imp</sub>) | Auxiliary Circuit 6 kV, Main Circuit 6 kV |
| Rated Insulation Voltage (U<sub>i</sub>) | 690 V |
| Number of Poles | 3P |
| Number of Auxiliary Contacts NC | 1 |
| Number of Auxiliary Contacts NO | 1 |
| Number of Protected Poles | 3 |
| Conventional Free-air Thermal Current (I<sub>th</sub>) | Auxiliary Circuit NC 6 A, Auxiliary Circuit NO 4 A, Main Circuit 0 A |
| Rated Operational Current AC-15 (I<sub>e</sub>) | (120 V) NC 3 A, (120 V) NO 0.75 A, (240 V) NC 3 A, (240 V) NO 0.75 A, (400 V) NC 0.75 A, (400 V) NO 0.75 A, (500 V) NC 0.75 A, (500 V) NO 0.75 A |
| Rated Operational Current DC-13 (I<sub>e</sub>) | (125 V) NC 0.55 A, (125 V) NO 0.55 A, (24 V) NC 1.25 A, (24 V) NO 1.25 A, (250 V) NC 0.27 A, (250 V) NO 0.27 A, (500 V) NC 0.15 A, (500 V) NO 0.15 A, (60 V) NC 0.55 A, (60 V) NO 0.55 A |
| Degree of Protection | IP20 |
| Pollution Degree | 3 |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm², Flexible with Insulated Ferrule 1x 0.75 ... 2.5 mm², Flexible with Insulated Ferrule 2x 0.75 ... 1.5 mm², Flexible 1/2x 0.75 ... 1 mm², Flexible 1/2x 1 ... 2.5 mm², Rigid 1/2x 0.75 ... 4 mm² |
| Connecting Capacity Main Circuit | Flexible with Ferrule 1/2x 0.75 ... 4 mm², Flexible with Insulated Ferrule 1/2x 0.75 ... 4 mm², Flexible 1/2x 0.75 ... 4 mm², Rigid 1/2x 0.75 ... 4 mm² |
| Tightening Torque | Auxiliary Circuit 1 ... 1.2 N·m, Main Circuit 2.5 ... 2.7 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm, Main Circuit 12 mm |
| Recommended Screw Driver | Main Circuit Pozidriv 2 |
| Power Loss | at Rated Operating Conditions per Pole 1.1 ... 2.0 W |
| Suitable For | AF09ZB, AF09B, AF12ZB, AF12B, AF16ZB, AF16B, AF26ZB, AF26B, AF30ZB, AF30B, AF38ZB, AF38B |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1, UL 60947-1, UL 60947-4-1, IEC 60335-2-40 A2L |
Technical UL/CSA
| Maximum Operating Voltage UL/CSA | Main Circuit 600 V AC |
| Contact Rating UL/CSA | (NC:) B600, (NC:) Q600, (NO:) Q600, (NO:) D300 |
| Connecting Capacity Main Circuit UL/CSA | Flexible 1/2x 18-10 AWG, Stranded 1/2x 18-10 AWG |
| Connecting Capacity Auxiliary Circuit UL/CSA | Flexible 1/2x 18-12 AWG, Stranded 1/2x 18-12 AWG |
| Tightening Torque UL/CSA | Auxiliary Circuit 9 ... 11 in·lb, Main Circuit 13 ... 22 in·lb |
Environmental
| Ambient Air Temperature | Operation -25 ... +60 °C, Operation Compensated -25 ... +60 °C, Storage -50 ... +80 °C |
| Ambient Air Temperature Compensation | Yes |
| Maximum Operating Altitude Permissible | 2000 m |
| Shock and Vibration Withstand acc. to IEC 61373 | Category 1, Class B |
| Resistance to Shock acc. to IEC 60068-2-27 | 11 ms Pulse 25g |
| Resistance to Vibrations | 5g 3 ... 150 Hz |
| RoHS Information | Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019 |
Material Compliance
| WEEE B2C / B2B | Business To Business |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |
ABB EcoSolutions
| ABB EcoSolutions | Yes |
| ABB Site Meeting Group Waste To Landfill Target | UL 2799 Zero Waste To Landfill Validation available |
| Improved Energy Efficiency for Customers | Product Efficiency - Product considered more energy-efficient compared to similar product on market or older products from the same line |
| Recyclability Rate of the Product acc. to EN45555 | Design for Closing Resource Loops - Standard EN45555 - 65 % |
External Classifications and Standards
| Object Classification Code | F |
| ETIM 9 | EC000106 - Thermal overload relay |
| ETIM 10 | EC000106 - Thermal overload relay |
| eClass | V11.0 : 27371501 |
| UNSPSC | 39121520 |
| IDEA Granular Category Code (IGCC) | 5364 >> Overload relay |
Downloads & documentation
Official documents from ABB, downloaded directly from the manufacturer.
Data sheets & manuals
- Data Sheet, Technical Information (2CDC106023D0201)
- Instructions and Manuals (2CDC106022M6802)
- Instructions and Manuals (Part 2) (1SAC200017M0002)
- Time-Current Characteristic Curve (1SAZ700506F0007)
- ABB EcoSolutions Profile (1SFC100125C0355)
- End Of Life Disassembling Instructions (1SAC200429H0001)
- Environmental Information (1SAC200057H0009)
CAD & dimension drawings
Certificates (10)
- REACH Declaration (2CMT2021-006202)
- RoHS Declaration (2CMT2021-006277)
- Environmental Product Declaration - EPD (1SAC200373H0001)
- A2L Certificate – IEC (1SAA941000-4601)
- CCC Certificate (2024010304658956)
- CQC Certificate (CQC2011010309464423)
- Declaration of Conformity - CCC (2020980304001788)
- Declaration of Conformity - CE (1SAD101100-3505)
- Declaration of Conformity - UKCA (1SAD201100-3505)
- UL Certificate (E48139-20090126)
1SAZ741201R1021: frequently asked questions
When can 1SAZ741201R1021 be shipped?
1SAZ741201R1021 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up 1SAZ741201R1021 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for 1SAZ741201R1021 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 1SAZ741201R1021, subject to availability and destination.
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