ABB t16-5.7 thermal overload relay 4.2a - 5.7a

Why Choose the ABB T16-6.3 Thermal Overload Relay?

The ABB T16-6.3 Thermal Overload Relay with product code 1SAZ711201R1038 is a compact and dependable motor protection relay designed to protect three-phase motors against overload conditions, phase loss and overheating. Part of the trusted ABB T16 thermal overload relay range, this device is engineered for seamless integration with ABB mini contactors and motor starter assemblies in industrial automation systems.

This overload relay enhances motor protection and system reliability by disconnecting the motor circuit when excessive current conditions occur. Featuring temperature-compensated operation, selectable manual or automatic reset and integrated auxiliary contacts, the T16-6.3 helps minimise downtime while improving operational safety in demanding industrial environments.

With an adjustable current range of 4.5 to 6.3 A, compact dimensions and direct mounting capability, the ABB T16-6.3 is ideal for protecting industrial motors used in conveyors, compressors, pumps, fans and machine automation applications.

Key Advantages

• Reliable thermal overload protection for industrial motors.
• Adjustable current setting from 4.5 to 6.3 A.
• Integrated phase failure sensitivity for improved motor safety.
• Compact design for direct mounting onto ABB contactors.
• Trip class 10 protection for standard motor applications.
• Selectable manual or automatic reset functionality.
• Integrated STOP and TEST functionality.

Key Features

• ABB T16 thermal overload relay series.
• 4.5 to 6.3 A adjustable current range.
• Trip class 10 overload protection.
• 3-pole motor protection relay.
• 1 NO + 1 NC integrated auxiliary contacts.
• Temperature-compensated operation.
• Manual or automatic reset selection.
• Direct mounting to ABB mini contactors.
• Compact IP20 enclosure for panel installation.

Technical Specifications

• Manufacturer: ABB
• Series: T16 Thermal Overload Relays
• Model: T16-6.3
• Product code: 1SAZ711201R1038
• Product type: Thermal overload relay
• Current adjustment range: 4.5 to 6.3 A
• Rated operational current: 6.3 A
• Trip class: Class 10
• Number of poles: 3
• Auxiliary contacts: 1 NO + 1 NC
• Rated insulation voltage: 690 V AC
• Auxiliary circuit voltage: 600 V AC/DC
• Protection rating: IP20
• Reset method: Automatic or manual
• Mounting type: Direct mounting / DIN rail
• Terminal type: Screw terminals
• Dimensions (H × W × D): approx. 76.7 × 45 × 53.5 mm
• Operating temperature: approx. -25 °C to +60 °C
• Weight: approx. 0.1 kg

Reliable Motor Protection for Industrial Systems

Thermal overload relays are essential components in motor starter systems, protecting motors from overheating caused by overload currents or phase failure conditions. By disconnecting the motor circuit during abnormal operating conditions, overload relays help extend motor lifespan and improve system reliability.

The ABB T16 series is specifically designed for integration into compact industrial control panels and machinery systems. Its flexible reset functionality, integrated auxiliary contacts and robust thermal protection characteristics make it suitable for a wide range of industrial automation applications.

Typical Applications

• Industrial motor starter assemblies.
• Conveyor and material handling equipment.
• Pumps, compressors and fan systems.
• Packaging and production machinery.
• Machine building and OEM automation systems.
• HVAC and industrial ventilation equipment.

Trusted by Automation Engineers Worldwide

ABB thermal overload relays are trusted worldwide for delivering reliable motor protection, improving equipment safety and helping reduce unexpected downtime in industrial automation systems.