Finder 12.21.8.230.0000 is a 230 V AC digital weekly time switch with one 16 A SPDT changeover contact, 30 programmable switching events and 35 mm DIN rail mounting.
£96.38
The Finder 12.21.8.230.0000 is an electronic digital weekly time switch designed for automatic switching of electrical loads according to programmed times and days. As part of the Finder 12 Series, it provides precise scheduled control for lighting, heating, ventilation, irrigation and other electrical equipment in residential, commercial and industrial installations.
This programmable time switch provides one changeover contact and weekly programming, allowing switching events to be assigned across the seven days of the week. An LCD interface supports configuration and status monitoring, while manual override, permanent switching, pulse programming and a holiday programme provide additional flexibility for automated electrical control.
With a 230 V AC supply, 16 A rated changeover contact and a minimum programming interval of 1 minute, the 12.21.8.230.0000 is suited to applications requiring accurate recurring switching. Its 35 mm DIN rail mounting enables straightforward installation within electrical distribution boards and control panels.
Digital time switches such as the Finder 12.21.8.230.0000 automatically switch connected electrical circuits according to stored schedules. This allows equipment to operate only when required, helping automate repetitive switching tasks while reducing the need for manual intervention.
The weekly programming capability makes the 12.21 suitable for installations where operating periods vary according to the day of the week. Additional pulse, holiday, manual override and permanent switching functions provide flexibility for lighting, heating, ventilation, irrigation and general building automation applications.
| Manufacturer | Finder |
|---|---|
| Series | 12 Series |
| Model | 12.21.8.230.0000 |
| Product type | Electronic digital weekly time switch |
| Contact configuration | 1 CO (SPDT) |
| Rated contact current | 16 A |
| Maximum peak current | 30 A |
| Rated contact voltage | 250 V AC |
| Rated load AC1 | 4000 VA |
| Rated load AC15 at 230 V AC | 750 VA |
| Nominal supply voltage | 230 V AC |
| Supply frequency | 50 / 60 Hz |
| Rated power | 1.4 VA |
| Programming type | Weekly |
| Number of programmes | 30 |
| Minimum programming interval | 1 minute |
| Clock accuracy | 1.5 seconds/day |
| Display | LCD |
| Backup battery | CR2450 LiMnO2, 3 V |
| Protection rating | IP20 |
| Mounting type | 35 mm DIN rail, EN 60715 |
| Electrical connection | Screw terminals |
The Finder 12.21.8.230.0000 is a digital weekly time switch used to automatically switch electrical loads according to programmed times and days of the week.
This version operates from a 230 V AC, 50 / 60 Hz supply.
The time switch has one CO (SPDT) contact rated at 16 A and 250 V AC.
The Finder 12.21.8.230.0000 supports a minimum programming interval of 1 minute and provides 30 programmable switching events.
Yes. The time switch incorporates an internal CR2450 3 V lithium battery that allows set-up and programming without the mains supply connected.
Finder 12 Series time switches provide dependable programmable control for lighting, building services and electrical equipment, combining precise weekly scheduling with flexible switching functions and straightforward DIN rail installation.{ "@context": "https://schema.org/", "@type": "Product", "name": "Finder 12.21.8.230.0000 Digital Weekly Time Switch 16 A 230 V AC", "sku": "12.21.8.230.0000", "mpn": "12.21.8.230.0000", "brand": { "@type": "Brand", "name": "Finder" }, "category": "Digital Time Switches", "description": "Finder 12.21.8.230.0000 is a 230 V AC digital weekly time switch with one 16 A SPDT changeover contact, 30 programmable switching events and 35 mm DIN rail mounting.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Supply voltage", "value": "230 V AC" }, { "@type": "PropertyValue", "name": "Contact configuration", "value": "1 CO (SPDT)" }, { "@type": "PropertyValue", "name": "Rated contact current", "value": "16 A" }, { "@type": "PropertyValue", "name": "Minimum programming interval", "value": "1 minute" }, { "@type": "PropertyValue", "name": "Protection rating", "value": "IP20" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the Finder 12.21.8.230.0000 used for?", "acceptedAnswer": { "@type": "Answer", "text": "The Finder 12.21.8.230.0000 is a digital weekly time switch used to automatically switch electrical loads according to programmed times and days of the week." } }, { "@type": "Question", "name": "What supply voltage does the Finder 12.21.8.230.0000 require?", "acceptedAnswer": { "@type": "Answer", "text": "This version operates from a 230 V AC, 50 / 60 Hz supply." } }, { "@type": "Question", "name": "What contact rating does the 12.21.8.230.0000 provide?", "acceptedAnswer": { "@type": "Answer", "text": "The time switch has one CO (SPDT) contact rated at 16 A and 250 V AC." } }, { "@type": "Question", "name": "What is the minimum programming interval?", "acceptedAnswer": { "@type": "Answer", "text": "The Finder 12.21.8.230.0000 supports a minimum programming interval of 1 minute and provides 30 programmable switching events." } }, { "@type": "Question", "name": "Can the Finder 12.21 be programmed without mains power?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The time switch incorporates an internal CR2450 3 V lithium battery that allows set-up and programming without the mains supply connected." } } ] }
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...