Why Choose the Finder 83.82.0.240.0000T Star-Delta Timer Relay?
The Finder 83.82.0.240.0000T is a compact DIN rail mounted star-delta timer relay designed for timed switching in industrial motor control, automation and electrical control panels. Part of the Finder 83 Series, this modular timer provides a dedicated star-delta timing function for coordinating the transition between star and delta contactors in suitable three-phase motor starting circuits.
Featuring a 24–240 V AC/DC supply range, two normally open relay outputs and a 16 A contact rating, the Finder 83.82.0.240.0000T provides a practical interface for motor starter control circuits. The timer operates the star output first, then introduces an adjustable transition interval before energising the delta output, helping coordinate the required starting sequence.
The T-version is intended for demanding industrial and railway-related applications. Its 22.5 mm wide housing, screw terminal connections and standard 35 mm DIN rail mounting allow straightforward integration into compact control cabinets, motor starter assemblies and automation equipment.
Key Advantages
- Dedicated star-delta timing function supports controlled starting of compatible three-phase motors.
- 24–240 V AC/DC supply range provides flexibility across different control voltage systems.
- Two normally open relay outputs provide separate star and delta contactor control signals.
- 16 A rated contacts support suitable control and auxiliary switching loads.
- Adjustable star operating time allows the starting sequence to be matched to the application.
- Adjustable transition interval of 0.05–1 s provides a defined delay between star and delta operation.
- Automatic switching sequence simplifies motor starter control wiring.
- Compact 22.5 mm modular housing conserves space inside electrical panels.
- 35 mm DIN rail mounting enables convenient installation.
- Screw terminal connections support secure electrical wiring.
- T-version construction is intended for demanding environmental applications.
Key Features
- Finder 83 Series modular timer relay.
- Model: 83.82.0.240.0000T.
- Timing function: SD – star-delta.
- Nominal supply: 24–240 V AC/DC.
- AC supply frequency: 50/60 Hz.
- Output arrangement: 2 NO contacts.
- Separate outputs for star and delta control.
- Rated contact current: 16 A.
- Rated contact voltage: 250 V AC.
- Adjustable transition time: 0.05–1 s.
- Rotary timing controls for convenient adjustment.
- Automatic star-to-delta switching sequence.
- High input/output electrical isolation.
- 35 mm DIN rail mounting.
- 22.5 mm housing width.
- Screw terminal connections.
- Suitable for integration with compatible motor starter contactors.
Technical Specifications
- Manufacturer: Finder
- Series: 83 Series
- Model: 83.82.0.240.0000T
- Product type: Modular star-delta timer relay
- Timer family: 83.82
- Version: T-version
- Timing function: SD – star-delta
- Number of timing functions: 1
- Nominal AC supply voltage: 24–240 V AC
- Nominal DC supply voltage: 24–240 V DC
- AC supply frequency: 50/60 Hz
- Output contact configuration: 2 NO
- Number of relay outputs: 2
- Output functions: Star and delta contactor control
- Rated contact current: 16 A
- Rated contact voltage: 250 V AC
- Rated AC1 switching capacity: 4,000 VA
- Star-delta transition interval: 0.05–1 s
- Timing adjustment: Rotary selectors and adjustment controls
- Contact material: Silver nickel (AgNi)
- Mounting type: DIN rail
- DIN rail size: 35 mm
- DIN rail standard: EN 60715
- Terminal type: Screw terminals
- Housing width: 22.5 mm
- Protection rating: IP20
- Application: Star-delta motor starting control
Controlled Star-Delta Switching for Three-Phase Motor Starters
The Finder 83.82.0.240.0000T operates using the SD star-delta timing function. When supply voltage is applied, the star output closes immediately, allowing the associated star contactor to energise. After the selected star operating time has elapsed, the star output opens. Following an additional adjustable transition interval of 0.05–1 s, the delta output closes and remains operated until the timer supply is removed.
This switching sequence helps coordinate the contactors in a conventional star-delta motor starter. Star-delta starting can reduce the starting current compared with direct-on-line starting for suitable motors, although it also reduces available starting torque. The Finder timer controls the sequence; it does not replace the main, star and delta contactors, their required electrical and mechanical interlocks, motor overload protection or other necessary protective devices.
Typical Applications
- Three-phase star-delta motor starter control circuits.
- Industrial motor control centres and electrical panels.
- Pump motor starting systems.
- Industrial ventilation and fan motor control.
- Compressor motor starter assemblies where star-delta starting is appropriate.
- Industrial machinery motor starting sequences.
- Conveyor and material handling equipment.
- Manufacturing and process automation systems.
- OEM motor control equipment.
- Industrial electrical distribution and switchgear assemblies.
- Railway-related auxiliary motor control applications.
- Control panels requiring coordinated star-to-delta contactor switching.
