Digital Timer Switch THC 15A Programmable Periodic Timer
Key attributes
| Brand | Switchgear parts |
| Model NO. | Digital Timer Switch THC 15A Programmable Periodic Timer |
| Rated voltage | AC220V+10% |
| Rated normal current | 25A |
| Rated frequency | 50/60Hz |
| Series | THC-15A |
Product descriptions from the supplier
The products according to the time set by the user, automatically turn on and tum off the variety of electrical equipment. Control object can be lights, lightboxes, neon signs, production equipment, agriculture, aquaculture, warehouse exhaust dehumidifier automatically preheat optimal control products, such as radio and television equipment Built-in lithium battery, high-precision, industrial-grade chips, strong anti-gamming
Item No |
THC-15A,20A,25A |
Operating Voltage |
AC 220-240V 50Hz/60Hz (Other special voltages can be customized) |
Power Consumption |
4.5VA |
Operating Temperature |
-10~+50℃ |
Accuracy |
≤1s/d (25℃) |
Power consumption |
16ON+16OFF |
Minimum Setting Range |
1 Minute |
Time Setting Range |
1 minute to 168 hours |
Contact Capacity |
Resistive:16N/250V AC(cosφ =1) 20A/250V AC(cosφ =1) |
Storage Battery |
3 YEARS |
Dimension |
81x36x66mm |
Weight |
125g |
QTY |
100 |
G.W |
18 |
N.W |
17 |
MEAS |
390x220x375 |
Mounting |
DIN rail mounting |
Periodic timing is a custom cycle interval timing mode, which can set an infinite cycle of "ON for X time + OFF for Y time" (e.g., 2h ON and 1h OFF cycle) without setting by day of the week. Ordinary weekly timing requires setting on/off times separately for 7 days. The THC 15A supports both modes, and periodic timing is more suitable for equipment requiring continuous cyclic operation (such as workshop exhaust fans and aquaculture aerators).
The THC 15A is a digital programmable periodic timer switch, compatible with AC 220-240V/50-60Hz voltage, with rated resistive load 16A/250VAC and inductive load 10A/250VAC. Its core functions include multi-group cycle timing (supporting timing range of 1min-168h), power failure memory (built-in lithium battery life ≥ 3 years), manual/automatic mode switching. It adopts 35mm DIN rail mounting and is suitable for scenarios such as cyclic start-stop of industrial equipment, agricultural irrigation timing, and commercial lighting control.
Related Products
-
GRT6-B Single-Function Time Relay
-
GRT6-2T AC/DC 24-240V Double Time Delay Relay
-
GRT8-ST Delay ON Star/Delta Timer Relay
-
Digital Timer Switch THC 20-1C Weekly Programmable
-
Digital Timer Switch THC 810 Weekly Programmable
-
Digital Timer Switch TS-GE2 Programmable Periodic Timer
-
GRL8-01 02 Level Control Relay
Related Knowledges
-
Faults and Handling of Single-phase Grounding in 10kV Distribution LinesCharacteristics and Detection Devices for Single-Phase Ground Faults1. Characteristics of Single-Phase Ground FaultsCentral Alarm Signals:The warning bell rings, and the indicator lamp labeled “Ground Fault on [X] kV Bus Section [Y]” illuminates. In systems with a Petersen coil (arc suppression coil) grounding the neutral point, the “Petersen Coil Operated” indicator also lights up.Insulation Monitoring Voltmeter Indications:The voltage of the faulted phase decreases (in01/30/2026 -
Neutral point grounding operation mode for 110kV～220kV power grid transformersThe arrangement of neutral point grounding operation modes for 110kV～220kV power grid transformers shall meet the insulation withstand requirements of transformer neutral points, and shall also strive to keep the zero-sequence impedance of substations basically unchanged, while ensuring that the zero-sequence comprehensive impedance at any short-circuit point in the system does not exceed three times the positive-sequence comprehensive impedance.For 220kV and 110kV transformers in new constructi01/29/2026 -
Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?Why Do Substations Use Stones, Gravel, Pebbles, and Crushed Rock?In substations, equipment such as power and distribution transformers, transmission lines, voltage transformers, current transformers, and disconnect switches all require grounding. Beyond grounding, we will now explore in depth why gravel and crushed stone are commonly used in substations. Though they appear ordinary, these stones play a critical safety and functional role.In substation grounding design—especially when multiple gr01/29/2026 -
Why Must a Transformer Core Be Grounded at Only One Point? Isn't Multi-Point Grounding More Reliable?Why Does the Transformer Core Need to Be Grounded?During operation, the transformer core, along with the metal structures, parts, and components that fix the core and windings, are all situated in a strong electric field. Under the influence of this electric field, they acquire a relatively high potential with respect to ground. If the core is not grounded, a potential difference will exist between the core and the grounded clamping structures and tank, which may lead to intermittent discharge.I01/29/2026 -
Understanding Transformer Neutral GroundingI. What is a Neutral Point?In transformers and generators, the neutral point is a specific point in the winding where the absolute voltage between this point and each external terminal is equal. In the diagram below, pointOrepresents the neutral point.II. Why Does the Neutral Point Need Grounding?The electrical connection method between the neutral point and earth in a three-phase AC power system is called theneutral grounding method. This grounding method directly affects:The safety, reliabilit01/29/2026 -
What’s the Difference Between Rectifier Transformers and Power Transformers?What is a Rectifier Transformer?"Power conversion" is a general term encompassing rectification, inversion, and frequency conversion, with rectification being the most widely used among them. Rectifier equipment converts input AC power into DC output through rectification and filtering. A rectifier transformer serves as the power supply transformer for such rectifier equipment. In industrial applications, most DC power supplies are obtained by combining a rectifier transformer with rectifier equ01/29/2026
