THC15A AC 110V-220V 16A DIN Rail Programmable Digital Timer Switch

THC15A AC 110V-220V 16A DIN Rail Programmable Digital Timer Switch (Model THC15A / CN101A DIN Series) is a 7-day programmable astronomical/weekly digital time switch designed for standard 35mm DIN-rail electrical distribution boards. Featuring a high-contrast LCD clock screen, up to 16/20 independent ON/OFF daily or weekly timer programs, a 16A 250V AC SPDT changeover relay, and a built-in rechargeable lithium backup battery that retains time and schedules for up to 60 days during mains power cuts, it automates street lights, water pumps, signage, and industrial machinery.

Key Features:

• 16 ON / 16 OFF Weekly & Daily Programs: Supports up to 16 independent ON/OFF switching events per day or across 15 different weekday/weekend combinations with 1-minute resolution.
• Built-In Rechargeable Backup Battery: Internal 1.2V/3V backup cell keeps the real-time quartz clock running and preserves all programmed schedules for 60+ days without AC mains power.
• Heavy-Duty 16A SPDT Changeover Relay: Isolated Normally-Open (NO) and Normally-Closed (NC) relay contacts switch up to 16A resistive loads (3500W) or inductive motor/lighting loads reliably.
• Manual Override Button (ON / AUTO / OFF): Front-panel Manual key lets technicians force the load ON or OFF instantly without erasing automatic schedules.
• Standard 35mm DIN-Rail Clip: Dual-module width housing snaps directly onto standard 35mm industrial DIN rails inside MCB distribution boxes.

Technical Specifications:

• Model: THC15A Digital Programmable Time Switch
• Coil / Operating Supply Voltage: AC 110V–240V (50Hz / 60Hz)
• Relay Contact Rating: 16A at 250V AC (cos φ = 1 Resistive) / 10A Inductive
• Contact Configuration: 1 × SPDT (Pin 3 = Common, Pin 4 = Normally Open, Pin 5 = Normally Closed)
• Programmable Events: 16 ON + 16 OFF (or 20 ON/OFF) per Day/Week
• Minimum Switching Interval: 1 Minute
• Power Reserve (Backup Battery): ≥ 60 Days
• Power Consumption: < 4.5 VA
• Operating Temperature Range: -10°C to +55°C

Mechanical Specifications:

• Enclosure Material: Flame-Retardant Polycarbonate/ABS DIN-Rail Housing with Flip-Down Dust Cover
• Mounting Style: 35mm DIN Rail Snap-Mount
• Terminals: 5 × Cage Screw Terminals (Pins 1–2 Coil Input, Pins 3–4–5 Relay Contacts)

Dimensions:

• Height: 86 mm
• Width: 36 mm (2-Pole DIN Module Width)
• Depth: 65 mm
• Weight: ~125 g

Pinout and Wiring:

• Terminals 1 & 2 (Power Input): Connect AC mains Live (L) and Neutral (N) to power the timer’s internal clock and relay coil.
• Terminal 3 (COM): Relay Common input (bridge from Live L if switching a mains load directly).
• Terminal 4 (NO): Normally Open output to load (closes when timer is ON).
• Terminal 5 (NC): Normally Closed output.
• First-Use Unlock Note: Press the recessed “C” (Reset) pinhole if the screen is blank, or press the “C/R” button 4 times to unlock the keypad (“∂” lock icon disappears) before setting time/programs.

Datasheet Reference:

• Standard Compliance: IEC 60730-1 / IEC 60730-2-7 Automatic Electrical Time Switch Standard

Commonly Used in:

• Street Lighting, Billboard Signage, and Shopfront Illumination
• Agricultural Irrigation Pumps, Hydroponics, and Borewell Timers
• Factory Shift Sirens, Exhaust Fans, and Pre-Heating Ovens
• Aquarium, Poultry Farm, and Greenhouse Lighting Schedules

Applications:

• Automatically switches outdoor advertising boards, street lamps, or garden lights ON at 6:00 PM and OFF at 6:00 AM every day.
• Schedules agricultural irrigation pumps or factory air compressors to run only during designated weekday hours while staying OFF on Sundays.
• Drives high-current 3-phase contactors for automating large industrial motors and water heaters.

Equivalent Models:

• XY-J04 Trigger Cycle Timer Delay Switch Dual MOSFET Control Board: Low-voltage 5V–36V DC millisecond/second cycle delay timer board.
• Automatic Solar Panel Battery Charger Board Night Light LED Lamp Control Switch: Dusk-to-dawn light-sensing solar switch.

Package Includes:

• 1 × THC15A AC 110V-220V 16A DIN Rail Programmable Digital Timer Switch