T91-S5D-22-24 24VDC High Power PCB Relay SPDT 20A Sealed Fast-On Type

The T91-S5D-22-24 is a high-power sealed PCB relay designed for demanding switching applications requiring exceptional current handling, reliable operation, and long service life. Based on the proven HF105F series platform, this industrial-grade relay features a Form 1C (SPDT/1 Changeover) contact arrangement and is capable of switching high-current AC and DC loads in commercial, industrial, appliance, and automation applications.

Featuring a 24VDC coil with a resistance of 660 , the relay delivers dependable actuation while maintaining efficient power consumption. Its sealed construction protects the internal contact system from dust, moisture, flux contamination, and environmental pollutants, making it suitable for use in harsh operating environments and automated manufacturing processes.

The T91-S5D-22-24 is rated for switching currents up to 20A and supports electrical loads of 20A at 240VAC or 28VDC, with a maximum rating of 20A at 277VAC/28VDC. This high switching capacity makes it ideal for controlling motors, compressors, pumps, heating elements, lighting systems, power supplies, and industrial equipment.

Designed with recessed 6.3mm Fast-on terminals and a horizontal PCB mounting configuration, the relay offers secure high-current connections while simplifying assembly and installation. The combination of PCB pins and Fast-on power terminals provides both mechanical stability and excellent current-carrying capability.

Class F insulation enhances safety and reliability by allowing operation in elevated temperature environments. This makes the relay particularly suitable for power control systems where thermal performance and long-term durability are critical requirements.

Its Form 1C (SPDT) contact configuration provides versatile switching functionality, allowing users to switch between normally open and normally closed circuits with a single relay, making it useful in automation, control logic, and protection circuits.

Key Features

High-power PCB-mounted relay

Form 1C (SPDT / 1 Changeover Contact)

24VDC coil voltage

Coil resistance: 660

Sealed construction for environmental protection

Horizontal mounting design

Recessed 6.3mm Fast-on terminals

Switching capacity up to 20A

Rated for 240VAC and 28VDC loads

Maximum rating: 20A at 277VAC/28VDC

Class F insulation system

Excellent electrical durability

Suitable for high-current switching applications

Reliable operation in demanding environments

Applications

Industrial automation systems

HVAC equipment

Motor and pump control

Power distribution systems

Lighting control equipment

Heating and cooling systems

Compressors and refrigeration units

Industrial machinery

Power supplies and inverters

Commercial and household appliances

Technical Specifications

Model: T91-S5D-22-24

Equivalent Series: HF105F-2-024D-1ZSTF

Relay Type: High Power Sealed Relay

Contact Form: Form 1C (SPDT)

Coil Voltage: 24VDC

Coil Resistance: 660

Contact Rating: 20A / 240VAC

Maximum Rating: 20A / 277VAC / 28VDC

Mounting Style: PCB Mounted

Orientation: Horizontal

Terminal Type: 6.3mm Recessed Fast-on

Insulation Class: Class F

Summary

The T91-S5D-22-24 is a rugged high-power 24VDC sealed PCB relay featuring a Form 1C contact arrangement, 20A switching capability, and recessed Fast-on terminals for secure high-current connections. With Class F insulation, sealed construction, and proven reliability, it is an ideal solution for industrial controls, power switching, HVAC systems, and heavy-duty electrical applications.

What's in the box
1 x T91-S5D-22-24 24VDC High Power PCB Relay SPDT 20A Sealed Fast-On Type