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Learn more by watching our EATON TSQD1NO | Single Pole Timer 24Hr 16Amp Analogue N/O 144hr Battery Backup video.
Additional related video.
The Eaton TSQD1NO is a 24-hour analogue timer rated for single-pole operation at 16A 230V AC, designed for DIN rail mounting in switchboards and distribution boards. The TSQD1NO controls loads up to 16 amps with a single normally open (N/O) contact and provides 72 hours of battery backup to maintain timing during power loss. It adjusts in 15-minute intervals across a 24-hour cycle and complies with IEC/EN 61439 design verification standards.
Electricians specify the TSQD1NO for load control where a simple, unprogrammed on/off schedule is needed — heating systems, pump cycles, lighting schedules, or equipment duty cycles. The analogue dial is rugged and glance-readable on site, requiring no software or complex configuration. Battery backup keeps the timer running through power cuts, so schedules remain intact without re-programming after supply restoration. A single 17.5mm-wide module fits standard DIN rails alongside circuit breakers and RCDs, occupying minimal space in tight switchboards.
The TSQD1NO is a workhorse timer favoured by contractors for retrofit installations and new builds where cost-effective load control matters. The quartz-controlled mechanism holds accuracy to within 1 second per day, and the transparent cover allows visual confirmation of the schedule dial without opening the enclosure. Manual operation lets users override the timer on-site if needed.
The TSQD1NO is not suitable for high-frequency switching, rapid on/off cycles (faster than 15 minutes), or safety-critical applications. It is a simple on/off timer, not a dimmer or proportional controller. Do not use the TSQD1NO to control RCDs, safety switches, or Earth leakage devices.
Verified Sparky Direct customer reviews: Eaton TSQD1NO (TSQD1NO)
"Great service." — Craig
"Good quality timer with battery backup. Simplicity just works." — Tready
(TSQD1NO)
The TSQD1NO can switch up to 16A at 250V, but motors draw high inrush current at startup. For motor control, use a separate contactor controlled by the TSQD1NO's contact. A licensed electrician should verify the load and circuit design before installation.
The TSQD1NO runs on an internal battery backup for up to 72 hours (3 days). The timer continues counting and holding the schedule, so when power returns, it resumes the programmed cycle without re-setting.
Yes. Pressing the manual button on the timer overrides the program — the contact energises or de-energises immediately, independent of the dial setting. Release the button to return to the scheduled timetable.
The smallest segment on the dial is 15 minutes. You cannot set intervals smaller than 15 minutes — the timer is designed for simple daily schedules (heating on/off, pump cycles, lighting), not for high-frequency switching.
No. The TSQD1NO is rated IP20 and is suitable for indoor switchboard mounting only. It is not rated for damp, splash, or outdoor environments. For outdoor control, a weatherproof contactor enclosure is required.
The Eaton TSQD1NO is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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Domestic Use: 1 Year
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These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Eaton |
| SKU | TSQD1NO |
| Barcode # | 4015081638871 |
| Package Weight | 0.095kg |
| TYPE | VALUE |
|---|---|
| Type | Timer |
| Brand | Eaton |
| Rated Current (A) | 16 |
| Height (mm) | 90 |
| Width (mm) | 17.5 |
| Depth (mm) | 65.5 |
| Mounting | DIN Rail |
| Program Time | 24 Hours |
| Voltage (V) | 230vac |
| Voltage (V) | 230 |
| Programming Type | Analog |
| Channels | 1 |
| Battery Backup | 3 Days |
| Operating temperature | -25 Deg Minimum |
| Min Switch Time | 15mins |
| IP Rating | IP20 |
| Contact Configuration | 1 x N/O |
| Frequency | 50Hz |
| Number of Poles | 1 |
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