Best AC Time Delay Relays for Reliable Control and Timing Applications
Time delay relays provide precise on-delay and off-delay control for electrical circuits, enabling automation, lighting, motors, and heating systems to respond at exact moments. The following selection highlights five AC-compatible delay relays that offer adjustable timing, wide voltage ranges, and intuitive wiring. Each product is suitable for DIN rail installations and supports common control voltages found in industrial and home automation environments.
Summary of chosen products
| Product | Brand | Voltage Range | Delay Range | Key Feature |
|---|---|---|---|---|
| Weasch 2Pcs Delay On Make Timer QD-068 | Weasch | 19-288 VAC / DC | 0.03-10 min | Two-pack, adjustable delay with wide input range |
| BAOMAIN Delay ON Make Timer QD-068 | Baomain | 110/240 VAC | 0.03-10 min | Knob-adjustable, simple replacement |
| AC 110V Delay Timer H3Y-2 | LJJDSLYU | AC 110V | 0-60 s | DPDT base socket included |
| GRT6-M1 Multifunction Time Relay | IGEYAPA | AC/DC 24-240V | 0.1 s – 10 days | Multiple functions, LED indicators |
| GRT8-M1 Multifunction Time Relay | IGEYAPA | AC/DC 12-240V | 0.1 s – 10 days | Higher current, DIN rail ready |
Weasch Delay On Make Timer QD-068 (2-Pack)
The Weasch QD-068 is a 2-pack delay-on-make timer with adjustable timing from 0.03 to 10 minutes. It supports input voltages from 19 to 288 VAC or DC, and operates at 50/60 Hz. This device is suitable for controlling loads that require a delayed energization, such as lighting or motor start sequences. Its compact form factor makes it a practical choice for panel installations and DIN rail setups.
BAOMAIN QD-068 Delay On Make Timer
The Baomain QD-068 model features knob-adjustable timing from 0.03 to 10 minutes and accepts 110/240 VAC. It is designed as a replacement timer that energizes after a controlled delay. The product is straightforward to wire and install, making it suitable for lighting, automation projects, and small equipment that benefits from a precise energize delay.
AC 110V Delay Timer H3Y-2
The H3Y-2 delay timer provides a 0–60 second timing range at AC 110V. It uses a DPDT base socket for flexible wiring and is appropriate for short-delay applications where quick, precise activation after power is applied is needed. The compact device supports moderate current loads and is suitable for control panels and automation interfaces requiring fast response times.
GRT6-M1 Multifunction Time Relay
The GRT6-M1 is a multifunction timer relay with a wide delay range from 0.1 seconds to 10 days. It operates from AC230V (50-60 Hz) and DC 24–240V, with a 10 A rated current and an SPDT output. It supports five timing functions controlled by power, four by control input, plus a latching option. LED indicators show power, activity, and timing status for easier setup and monitoring in industrial or facility automation projects.
GRT8-M1 Multifunction Time Relay
The GRT8-M1 is a high-capacity timer relay in the GRT8 family, covering 12-240V AC/DC. It offers a broad timing range from 0.1 seconds to 10 days and a 16 A rated current. The device provides five power-driven timing modes plus four input-driven modes, making it suitable for complex automation sequences, motor control, and lighting applications that demand longer delays and robust performance. It also features clear LED status indicators for quick diagnostics.
uxcell AH3-3 Delay Timer With Base
The uxcell AH3-3 is a 110V AC timer with a 0–60 minute range, designed for DIN rail mounting with a base. It handles 5 A at 250 VAC resistive loads and includes a base for stable installation. This timer is suitable for panel timers, process control, and light automation tasks requiring a simple, reliable delay-on energize function.
BAOMAIN QD-072 Delay On Break Timer
The Baomain QD-072 timer offers 0.03–10 minutes adjustable delay with a 1.5A rating and 18–240 VAC range. It has an energized conduction behavior described as non-delayed during energization and delayed on power failure. The design is suitable for sequencing power to devices that should only activate after a controlled pause, with straightforward knob adjustment for quick setup.
GRT8 A1 Delay On Time Relay
The GRT8 A1 delay-on-time relay provides a 0.1 seconds to 10 days timing range with AC/DC 12–240V operation and a 16A rating. It is designed for DIN rail installations and offers a robust feature set for precise power-on delay sequencing, compatible with industrial control panels, lighting, and motor control schemes. The device includes user-friendly indicators and switchable configurations to fit various automation needs.
Buying Guide: Key Considerations For Selecting An AC Time Delay Relay
- Timing range and resolution: Choose a relay with the delay window and granularity that matches your application, whether you need seconds, minutes, or longer delays.
- Voltage compatibility: Verify the device’s input voltage range (AC and/or DC) to ensure compatibility with your power supply and control circuitry.
- Load rating: Check the contact rating (amps and voltage) to ensure it can safely switch your load, especially for motors or heaters with inductive surges.
- Wiring and form factor: Consider DIN-rail compatibility, base/socket options, and the physical size to fit within your control panel or enclosure.
- Control logic: Understand whether the relay supports delay-on, delay-off, latching, or multi-function timing to suit your sequencing needs.
- Indicators and diagnostics: LED status indicators can help with troubleshooting and setup without measuring signals with tools.
- Durability and environment: Look for certifications, IP ratings if used in harsh settings, and mechanical durability for long-term reliability.
- Installation and replacement: If replacing an existing timer, compare similar model families (QD, GRT series) to simplify wiring and configuration.
- Documentation and support: Favor models with clear datasheets, setup instructions, and available customer support for complex configurations.
These considerations help ensure reliable timing control while maintaining safety and ease of use in American automation environments. The selected products cover a range of needs—from compact, basic delays to multifunction timers capable of complex sequences across 12–240V systems.