Power off delay relays provide reliable, programmable delays to safely switch equipment after power loss or to precisely time shutdown sequences. This article highlights five well-matched models from reputable brands, offering wide delay ranges, clear status indication, and easy DIN rail mounting for industrial and automation applications. Each product is summarized below with key features to help you compare options quickly.
| Product | Brand | Voltage Range | Delay Range | Output |
|---|---|---|---|---|
| Baomain Multi-Function Time Relay TBT7-C1 | Baomain | AC/DC 12-240V | 0.1s – 10 days | 1 SPDT |
| GRT8-M1 Multifunction Time Relay | IGEYAPA | AC/DC 12-240V | 0.1s – 10 days | 1 SPDT |
| GRT6-M1 Multifunction Time Relay | IGEYAPA | AC/DC 24-240V | 0.1s – 10 days | 1 SPDT |
| CNAODUN HYCRT8-B1 | cnaodun | AC/DC 24-240V | 0.1s – 10 days | 1 SPDT |
| Walfront GRT8-B1 | Walfront | AC/DC 12V-240V | 0.1s – 10 days | 1 SPDT |
Baomain Multi-Function Time Relay TBT7-C1
The Baomain TBT7-C1 is a versatile dimable time relay designed for DIN rail mounting with a wide voltage range and a substantial delay window. It supports both AC and DC operation from 12V to 240V and offers a delay OFF function suitable for safe power-down sequences. The device is rated for up to 16A with an SPDT contact, enabling straightforward wiring for common automation tasks. The wide 0.1-second to 10-day range provides the flexibility needed for industrial controls, lighting systems, and motor timing. Power consumption stays modest, making it suitable for compact control panels. The LED indicators help operators confirm the relay’s operational state at a glance. The product lists multiple timing modes, including Delay OFF, facilitating protective or coordinated shutdown operations in automation lines. This model is well suited for applications where a reliable, user-adjustable power-off delay is needed without complex programming.
GRT8-M1 Multifunction Time Relay
The GRT8-M1 from IGEYAPA offers a robust set of functions for process control, including five timing modes controlled by main power and four modes controlled by input control. It features a wide timing window from 0.1 seconds to 10 days and a 16A rated output with a single SPDT contact. The device supports AC230V operation and includes visual indicators—green LED shows power presence, red LED signals active timing—helpful for quick diagnostics on busy production floors. This model is designed for industrial equipment, lighting, and heating control tasks where precise activation or deactivation timing is critical. It supports multiple preset functions and time settings to cover common automation scenarios with a single device.
GRT6-M1 Multifunction Time Relay
IGEYAPA’s GRT6-M1 delivers similar versatility in a compact package tuned for 24-240V operation. It supports a wide delay range of 0.1 seconds to 10 days and a 10A rating, with a single SPDT output. The design includes LED indicators to show power on status and active timing, helping technicians monitor operations during commissioning and routine maintenance. Suitable for industrial equipment, lighting, heating controls, and motor timing, the GRT6-M1 emphasizes the same approach as its larger sibling, but in a model aimed at lower voltage and current applications where space is at a premium.
CNAODUN HYCRT8-B1 Delay Off
The CNAODUN HYCRT8-B1 is a compact DIN-rail mounted decimal timer designed for 24-240V AC/DC operation. It offers a broad 0.1-second to 10-day delay window and can handle up to 16A switching. The unit includes a panel knob for straightforward time setting and built-in indicators for status, aiding quick diagnostics after installation. Its practical single-function power-off delay design makes it a straightforward choice for projects requiring a reliable after-power-down delay to ensure safe equipment shutdown, cooling, or sequence control. The robust flame-retardant housing adds a layer of protection in electrical panels.
Walfront GRT8-B1 AC/DC Delay Time Relay
The Walfront GRT8-B1 is a single-function delay relay designed for DIN rail mounting with a very wide timing range from 0.1 seconds to 10 days. Its compact form factor and simple panel-based time setting are aimed at quick deployments in control cabinets. The device supports AC/DC operation across 12V to 240V and provides a single SPDT output to control a wide variety of loads. LED indicators provide feedback on power status and control activity, helping technicians validate operation at a glance. This relay is suitable for basic power-off delay needs where a robust, reliable, and accessible solution is required.
Buying Guide: Key Considerations For Power Off Delay Relays
When selecting a power off delay relay, consider the following factors to ensure you choose a device that matches your application, environment, and maintenance expectations.
- Voltage compatibility: Ensure the relay supports your control voltage (AC or DC) and the required voltage range (e.g., 12V to 240V). Higher flexibility reduces the need for multiple devices.
- Delay range: Look for a timer with a broad range (from fractions of a second to days) to cover startup sequencing, safe shutdown, or dwell-time requirements. A user-friendly knob or DIP switch helps with quick setup.
- Contact rating and type: Most relays offer SPDT contacts. Confirm the current rating (e.g., 10A or 16A) and the type (NO/NC) to ensure reliable switching for your load type.
- Mounting and enclosure: DIN rail mounting is common in control cabinets. Consider enclosure material and thermal performance if the relay will operate in warm environments.
- Indication and status: LEDs or other indicators simplify commissioning and troubleshooting by showing power, active timing, and fault states at a glance.
- Power consumption: For panel efficiency, especially in compact cabinets, check the relay’s power draw and ensure it does not unduly load power supplies or heat sensitive areas.
- Functionality and modes: Some models feature multiple timing modes (Delay ON, Delay OFF, or symmetric cycles). Choose based on whether your application requires delaying activation, de-activation, or both.
- Durability and certifications: Look for flame-retardant housings and compliance with industry standards if the device will be installed in harsh or safety-critical environments.
- Diagnostics and indicators: Clear labeling and LED indicators aid maintenance by reducing guesswork during fault-finding and calibration.
In summary, power off delay relays are valuable for ensuring orderly equipment shutdowns, protecting components from power surges, and coordinating multi-step processes in automation systems. The products listed here offer a mix of broad delay ranges, robust outputs, and straightforward installation to fit a variety of industrial and commercial setups. Always verify wiring diagrams and installation instructions from the manufacturer before integrating a relay into your control system.