This changeover relay from Durite operates on a +12V input signal and has an adjustable delay time (either a delay before ON or a delay before OFF) that the user can configure to meet the requirements of their application.
Download a comprehensive user guide here
The relay operates in one of two modes:
- DELAY OFF - a momentary +12V input is given (e.g. from a momentary switch), the relay energises and there is a delay before the relay de-energises. Note: If a continuous rather than momentary input signal is provided, the timer will commence when the signal is removed.
- DELAY ON - a continuous +12V input is given (e.g. from an ON/OFF switch), there is a delay and then the relay energises (the relay de-energises when the input is removed)
In both modes the delay time is adjustable between 0.5 seconds and 6 hours, making this relay extremely versatile. The adjustment is made by removing the plastic plugs on top of the relay to access the dials beneath. The adjustment settings are shown in the table below:
| Dial A setting | Dial B range | Operating Mode |
| 0 | 0.5..........10 secs | Delay before OFF |
| 1 | 5..............60 secs | Delay before OFF |
| 2 | 0.5..........10 mins | Delay before OFF |
| 3 | 5..............60 mins | Delay before OFF |
| 4 | 0.5...........6 hours | Delay before OFF |
| 5 | 0.5...........6 hours | Delay before ON |
| 6 | 5..............60 mins | Delay before ON |
| 7 | 0.5...........10 mins | Delay before ON |
| 8 | 5...............60 secs | Delay before ON |
| 9 | 0.5...........10 secs | Delay before ON |
| Terminal No. | Connection |
| 15 | +12V input signal |
| 30 | +12V for load (common terminal) |
| 31 | Earth/ground |
| 87 | Normally Open (NO) output |
| 87a | Normally Closed (NC) output |
Important: If the intended load draws more than 10A then this relay should not be used to directly switch the load. In this case the output should be used to switch the coil of a secondary relay that has a sufficient current rating and is fitted with a voltage suppression resistor or diode . This voltage suppression is important to prevent voltage spikes damaging the timer relay electronics.
Please note that due to the electronics used in this relay it is not possible to use it to switch the negative side of the circuit.
- Relay type: Changeover with adjustable timer delay
- Voltage rating: 12V DC
- Operating voltage: 9-15V DC
- Current rating: 10A max.
- No terminals: 5
- Terminal size: 6.3mm blade
- Bracket type: Removeable, metal
- Overall dims (inc. terminals): 30 (L) x 30 (W) x 53 (H) mm
- Current draw when timer is active: Approx. 35mA
- Current draw when timer is inactive: Approx 5mA
- Operating time: 15ms
- Release time: 10ms
Part Number: 0-742-12
| Average Rating (36 Reviews): | |
23 November 2023 | Ewan
A HUGE THANKS to the team , had the part , had the knowledge and got it to me real quick . Service A+
Response:
Thank you for taking the time to leave us this review, we really appreciate it!
13 April 2023 | Martyn
Does exactly what I wanted, really good.
27 December 2022 | Fred
Couldn't find in US. Great communications and reasonable ship time
Response:
Thank you for the feedback Fred!
16 May 2022 | Nick
Good unit , easy to set up with included instructions, comes with a small mounting bracket.
16 March 2022 | Michael
I bought this relay to control when a cooling fan was turned off after the engine was shut down. It does an excellent job. I gave it 4 stars because I needed a powerful magnifying glass in order to see the timer adjustment dials!
29 June 2021 | Malcolm
I installed one of these in a pay-to-enter system 14 months ago. Was called out today because the system wasn't working and tracked the fault to this relay.
I used the same relay in another system which was installed earlier this year. I will wait to see if it is any more durable.
Response:
We have changed the supplier of this relay to Durite this year (2021) to continue working on the improving quality of our relays. We are confident there will be no further issues with our new branded relays.
03 May 2021 | Norman
Used to delay extractor fan shut down after light switched off. Huge adjustment range - excellent product.
15 February 2021 | Guy
Excellent piece of equipment but needs the markings on the dials to be magnified
26 January 2021 | Michael
does what it says on the tin but tricky to set up the adjustment no reason why the dials are quite so small and difficult to read good instructions and service though
01 November 2019 | Robert
out of the box and working very good stuff
Read all 36 customer reviews...
Durite is a UK-based company that has built an impeccable reputation manufacturing and supplying high-quality parts to the automotive aftermarket for over 80 years.
