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1SAZ721201R1038 - TF42-5.7 Thermal Overload Relay 4.2 ... 5.7 A | ABB
| Cat No. | 1SAZ721201R1038 |
| Category | Over Load Relay |
| Stock | In Stock |
| Condition | Brand New, Sealed Packaging |
| Product Type | Over Load Relay |
In Stock — 20 Qty
$135.19
| Quantity | Expected Delivery |
|---|---|
| 20 Units | 25 Business Days |
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Technical Specification
ABB 1SAZ721201R1038 Over Load Relay Technical Specification
| Over Load Relay | |
|---|---|
| Bimetal relay Type | - |
| Contactor Type | TF42-5.7 |
| Current Range | 4.20 - 5.70A |
| Range of Product | — |
| Secondary Volt Ac | - |
| Sub Family | - |
| Type | - |
Product Details
1SAZ721201R1038 ABB TF42-5.7 - The TF42-5.7 thermal overload relay is an economic electromechanical protection device for the main circuit. It offers reliable and fast protection for motors in the event of overload or phase failure. The device has trip class 10. Further features are the temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP function and a trip indication. The overload relays are connected directly to the block contactors. Single mounting kits are available as accessory. We are dedicatedly involved in providing an excellent quality products at Electrihub.
Product Dimensions
ABB 1SAZ721201R1038 dimensions and weight
Dimensions (L × W × H)
Length
7.8 cm
Width
4.8 cm
Height
9.2 cm
Weight
Net Weight
0.5 kg
Dimensions are approximate. For precise dimensional drawings, contact us.
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Product Overview
1SAZ721201R1038 ABB TF42-5.7 - The TF42-5.7 thermal overload relay is an economic electromechanical protection device for the main circuit. It offers reliable and fast protection for motors in the event of overload or phase failure. The device has trip class 10. Further features are the temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP function and a trip indication. The overload relays are connected directly to the block contactors. Single mounting kits are available as accessory. We are dedicatedly involved in providing an excellent quality products at Electrihub.
Frequently Asked Questions for 1SAZ721201R1038
Electrihub is an authorized ABB distributor, guaranteeing 100% genuine ABB 1SAZ721201R1038 or TF42-5.7 Over Load Relay products backed by ABB warranty. With strong inventory and competitive pricing, we ensure quick delivery and reliable support for your automation needs.
Our experienced technical team is always ready to help you select the right ABB solution for your project — ensuring performance, safety, and peace of mind.
Our experienced technical team is always ready to help you select the right ABB solution for your project — ensuring performance, safety, and peace of mind.
The ABB 1SAZ721201R1038 overload relay provides thermal overload protection for motors, offering adjustable current settings, phase-loss sensitivity, trip class options, and compatibility with ABB contactors for coordinated starter control.
It is commonly installed in MCC panels, pump starters, HVAC motors, conveyor systems, and industrial automation requiring reliable overload protection.
It senses excess current beyond rated limits, causing a trip to disconnect the motor and prevent insulation damage, winding burnouts, or premature failure.
Set the dial to match the motor full load current from the nameplate. Ensure ambient temperature and motor duty cycle are considered.
Mount the relay directly under compatible ABB contactors or remote wire it as needed. Maintain proper torque, terminal tightening and check contact alignment.
Datasheet for 1SAZ721201R1038 is available on Electrihub with curves, wiring & technical characteristics.
Yes. RAS Electrihub Private Limited provides PAN India delivery with reliable logistics, safe packaging, and doorstep delivery across all states and union territories.
Yes. RAS Electrihub Private Limited issues GST-compliant invoices and also supports PO-based invoicing for businesses, contractors, and organizations across India.
Yes. RAS Electrihub Private Limited operates as an ISO-certified organization, ensuring quality sourcing, authentic products, and standardized procurement and delivery processes.
The price of ABB 1SAZ721201R1038 Over Load Relay depends on specifications, availability, and market conditions. You can check the latest GST-inclusive price on Electrihub India, which provides genuine products, transparent billing, and PAN India delivery.
The ABB 1SAZ721201R1038 is a commercial-grade Over Load Relay designed to protect three-phase AC electric motors from continuous overcurrent conditions, thermal degradation, and mechanical stalling. It operates as a ABB TA or TF series bimetallic thermal overload relay (e.g., TA25DU/TF42), providing economical, accurate protection for AF contactors against overload and phase failure in strict alignment with IEC/EN 60947-4-1. The device is engineered to comply with strict international benchmarks such as IEC/EN 60947-4-1, UL, and CSA standards, making it fully ready for integration into global power grids operating at both 50Hz and 60Hz. Procurement managers can find this authorized switchgear with global shipment support on Electrihub.com.
The ABB 1SAZ721201R1038 Over Load Relay continuously monitors phase currents via precisely calibrated internal elements (bimetallic strips or advanced electronic current transformers). In the event of a phase failure or single-phasing condition, the relay triggers an accelerated differential trip response to prevent rapid motor winding insulation breakdown. This action mechanically shifts the auxiliary contact block, opening the contact to break the control circuit coil and closing the contact to signal a system fault, ensuring complete protection across complex global automation networks.
The ABB 1SAZ721201R1038 is physically and electrically engineered for direct plug-in mounting to matching ABB power contactor frameworks, optimizing panel space and eliminating unnecessary control wiring. It is certified for both Type 1 and Type 2 coordination schemas under short-circuit conditions when combined with appropriate molded case circuit breakers (MCCBs) or high-capacity fuses. For independent installation profiles, standalone DIN rail or panel baseplates are supported, providing global panel builders on Electrihub with maximum engineering flexibility.
The ABB 1SAZ721201R1038 features a front-mounted current adjustment dial that allows commissioning engineers to set the precise trip threshold matching the motor's nameplate Full Load Current (FLC). The device features a user-configurable selection switch for Manual or Automatic reset modes; Manual mode requires an intentional field reset after diagnosing the overload fault, while Automatic mode allows the bimetallic components to self-cool and automatically restore the control path. Additionally, an integrated mechanical trip indicator enables swift diagnostic troubleshooting to minimize operational downtime.
Sourcing the ABB 1SAZ721201R1038 Over Load Relay via Electrihub.com provides international industrial buyers with guaranteed product authenticity, manufacturer warranty support, and full technical datasheet compliance. Electrihub.com is optimized for global enterprise supply chains, providing competitive wholesale commercial pricing, transparent export-ready compliance documentation, bulk order capability for major infrastructure projects, and specialized engineering support to ensure seamless component coordination across all international projects.
Reviews & Ratings
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We always trust ABB for protection devices. This Over Load Relay was available in stock on RAS Electrihub at a competitive price. Support team helped with cross-checking the model compatibility.
Smooth ordering process and quick delivery. This ABB Over Load Relay (1SAZ721201R1038) is authentic and works exactly as required. Will buy again from RAS Electrihub.
Purchased this ABB Over Load Relay (1SAZ721201R1038) from RAS Electrihub. 100% genuine component received with proper manufacturer warranty and GST invoice. Highly recommended for industrial needs.
Highly recommended for industrial use.
Installed ABB 1SAZ721201R1038 overload relays in our industrial plants across UK. The product offers excellent reliability and precise overload protection. Electrihub support is top-notch.
We use these relays throughout our facilities for reliable overload protection and minimal downtime.
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