The TBC SUL181h is a high-precision 24-hour mechanical time switch engineered for dependable automatic ON/OFF control of electrical loads according to daily schedules. Powered by a quartz-driven motor, this timer delivers exceptional timing accuracy, stable performance, and extended service life. Designed for easy DIN rail installation, the SUL181h is ideal for lighting control, HVAC systems, and a wide range of time-based automation applications in commercial and industrial environments.
The TBC SUL181h mechanical time switch combines proven reliability with modern quartz precision to deliver accurate daily scheduling for electrical loads up to 16A. Unlike conventional synchronous motor timers, the quartz-driven mechanism provides superior accuracy and is unaffected by power interruptions or frequency variations.
The device features an intuitive mechanical programming interface with a clear 24-hour dial marked with color-coded segments. Users can easily set multiple ON/OFF cycles throughout the day by simply pushing or pulling the segment tabs around the dial. With 96 programmable segments and a minimum 15-minute switching interval, the SUL181h offers flexible scheduling options for diverse applications.
Built for industrial and commercial environments, the timer operates reliably across a wide temperature range (-10°C to +50°C) and features a robust flame-retardant housing. The manual override function allows users to temporarily switch loads ON regardless of the programmed schedule, providing operational flexibility when needed.
Installation is straightforward with standard 35mm DIN rail mounting, and the clearly marked screw terminals accommodate both solid and stranded conductors. The compact footprint makes it suitable for installation in crowded distribution panels and control cabinets.
Operating Principle:
The SUL181h utilizes a precision quartz motor to drive a 24-hour rotating dial. Mechanical switching segments around the dial activate a contact mechanism at programmed times, providing reliable ON/OFF control of connected loads.
Contact Configuration:
Single-pole changeover contact (SPDT) rated for 16A at 250V AC. The contact rating of 16(4)A indicates continuous current capacity of 16A with switching capacity suitable for resistive loads.
Programming Method:
Mechanical segments around the time dial can be pushed in (OFF) or pulled out (ON) to create the desired daily schedule. Each segment represents a 15-minute time period, allowing up to 96 switching points per 24-hour cycle.
Power Supply:
The timer requires continuous power supply (200-240V AC, 50Hz) to maintain accurate timekeeping. The quartz motor consumes minimal power (≤1W) during operation.
Manual Override:
A selector switch provides AUTO and ON modes. In AUTO mode, the timer follows the programmed schedule. In ON mode, the load remains continuously energized regardless of programming.
Environmental Protection:
IP20 rating provides protection against solid objects larger than 12.5mm. Suitable for indoor installation in dry locations within the specified temperature range.
| Parameter | Specification |
|---|---|
| Electrical Characteristics | |
| Rated Voltage | 200–240 V AC |
| Frequency | 50 Hz |
| Rated Current | 16 A |
| Contact Rating | 16(4) A @ 250 V AC |
| Power Consumption | ≤ 1 W |
| Drive Type | Quartz motor |
| Timing Characteristics | |
| Switching Cycle | 24 hours |
| Minimum Switching Interval | 15 minutes |
| Number of Switching Segments | 96 segments |
| Daily Programs | ON/OFF repeated every 24 hours |
| Timing Accuracy | Quartz controlled |
| Mechanical Characteristics | |
| Mounting Type | DIN Rail 35 mm |
| Housing Material | Flame-retardant thermoplastic |
| Degree of Protection | IP20 |
| Dimensions (W × H × D) | 45 × 52.5 × 60 mm |
| Operating Temperature | -10 °C to +50 °C |
| Storage Temperature | -20 °C to +60 °C |
| Mechanical Life | > 1,000,000 operations |
| Electrical Life | > 100,000 operations |
| Terminal Configuration | |
| Terminal Type | Screw terminals |
| Conductor Type | Solid and stranded conductors |
| Terminal Markings | Clear identification |
316TBC TIMER
The TBC 316TBC Bluetooth Timer is a programmable time switch designed for convenient automatic contr...
View Details
SUL 180a
The TBC SUL 180A is a 24-hour mechanical time switch designed for automatic ON/OFF control of electr...
View Details
THC-711A
The THC-711A is a panel-mount digital time switch offering weekly programmable ON/OFF scheduling wit...
View Details
TA-15HC
Weekly programmable digital time switch with 28 ON/28 OFF programs, high accuracy timing, and 3-year...
View Details