The Optimum OP-SBSW is a captive-tappet 7-day timeswitch for weekly scheduling of heating, hot water and lighting, for schedules that differ across the week. If you want the heating on later at weekends, or a shop sign running to different hours on Sundays, a 7-day dial does what a 24-hour timer can't.
It mounts directly over a single pattress box, so it fits a standard back box on the surface or in the wall. The dial drives volt-free changeover contacts, meaning it can switch a separate circuit rather than carrying the load itself.
Key features
- 7 day dial with captive tappets
- 2 hour tappet intervals across the week
- Volt-free SPDT changeover contacts
- Designed to mount directly over a single pattress
- Timed / OFF / constant selection
- General purpose: heating, hot water, lighting and appliance circuits
Technical specification
| Switching capacity |
16 A resistive, 8 A inductive |
| Contacts |
volt-free SPDT changeover |
| Programme |
7 day, 2 hour tappet intervals |
| Tappets |
Captive |
| Modes |
Timed / OFF / constant |
| Mounting |
standard single pattress (socket box), surface or flush |
| Discharge lighting |
Not suitable without a contactor |
Installation notes
Not suitable for discharge lighting without a contactor. Installation should be carried out by a qualified electrician in accordance with I.S. 10101.
Need 15 minute resolution rather than 2 hour? See the 24-hour version, the OP-SBST.
Frequently Asked Questions
Q: Where can I buy a 7 day socket box timer in Ireland?
A: The Optimum OP-SBSW 7 day socket box timer is available from Shamrock Electrical at shamrockelectrical.ie, with free delivery to every county in the Republic of Ireland from the first euro. You can also order for collection from our shop in Greenogue Business Park, Rathcoole, Co. Dublin, usually ready in 2 to 4 days.
Q: Why choose 7 day over a 24 hour timer?
A: A 7 day dial lets each day of the week run its own schedule, such as heating later on Saturdays and off entirely on Sundays. A 24 hour timer repeats the same programme every day.
Q: What are the tappet intervals?
A: 2 hours on the 7 day dial. If you need finer control, the 24 hour OP-SBST gives 15 minute intervals but the same schedule every day.
Q: Do I need an electrician to install it?
A: Yes. It wires into a fixed circuit and mounts over a standard pattress box, so it should be installed by a registered electrician in accordance with I.S. 10101.
Q: Can I use it for fluorescent or discharge lighting?
A: Not directly. Discharge lighting must be switched through a suitably rated contactor. Your electrician will size this for the load.
Q: Do you deliver across Ireland?
A: Yes. We deliver to every county in the Republic of Ireland, and you can also order for collection from our Rathcoole shop, usually ready in 2 to 4 days.
Every order ships with free delivery from the very first euro, with no minimum spend and no threshold to reach. New customers take 10 percent off a first order. Trade pricing is not shown online, so if you are buying for a job or a contract, call us on 01 401 9907 or email sales@shamrockelectrical.ie for your rate. We are an Irish owned electrical supplier based in Greenogue Business Park, Rathcoole, just off the N7 and well positioned for the M50.
