Schneider Electric 15335 Acti9 IH 24 h Mechanical Time Switch

15335 Acti9 IH 24 h mechanical time switch, without memory

The 15335 is a single-channel mechanical time switch from the Schneider Electric Acti9 IH family, built around a 24 h cycle and supplied for 230 V AC at 50 Hz. It is 18 mm wide (2 modules of 9 mm) and mounts on DIN rail, which makes it a simple way to automate a lighting or small-load circuit in a distribution board without any programming menus. Seven Star LLC supplies the 15335 in Oman and the GCC as an independent supplier based in Muscat.

This page reads the official datasheet of the 15335 and sets out what it can switch, how finely it can be set, and how it differs from the other IH time switches. The product is described on the datasheet as without memory, and the practical consequences of that are covered in the power-reserve section below.

15335 technical specifications

How the 15335 is set and what its limits are

The IH family is set by hand: the datasheet gives the type of setting as manual time changeover, with a cycle of 24 h, a maximum of 48 on – 48 off switchings per cycle and a minimum interval of 15 min between them. Accuracy is ± 1 s/day 20 °C, which is more than adequate for street, facade or signage lighting but not a replacement for a networked clock.

Because the same program repeats every day, a mechanical switch like this unit is best where the daily pattern is constant. If your site needs different schedules on weekdays and at weekends, or holiday exceptions, look at the programmable IHP and IC Astro models instead; the table in this page’s family section shows the neighbouring options.

Power reserve and supply on the 15335

The datasheet lists no battery life and no backup time for this version, which matches its designation as the variant without memory: if the supply is lost, the clock cannot be expected to keep time through the outage.

Rated operational voltage is 230 V AC at 50 Hz, and the device draws 0.5 W itself. Connections are screw terminals. Check the supply voltage and frequency of the board before ordering, because the three IH versions on this page do not share the same supply range.

Loads the 15335 can switch

The contact is rated 16 A – 250 V AC pf = 1 and 4 A – 250 V AC pf = 0.6. The datasheet also lists lamp-type limits, shown below. Capacitive and electronic loads are listed separately because inrush current, not the steady load, usually decides the choice.

• Parallel-corrected fluorescent tube 5 × 58 W 4.7 µF
• Parallel-corrected fluorescent tube 7 × 40 W 7 µF
• Parallel-corrected fluorescent tube 2 × 100 W 18 µF
• 230 V AC halogen lamp 1000 W
• 230 V AC incandescent lamp 1000 W
• Fluocompact lamp 700 VA
• Compact fluorescent lamp 150 W
• LED lamp < 2 W 30 W
• LED lamp ≥ 2 W 300 W

For motors, heaters or anything near the contact rating, switch through a contactor and use the time switch only as the control element.

15335 compared with the other IH time switches

The three IH references covered here share the 24 h mechanical principle but differ in supply, reserve and housing. The comparison uses the datasheet values.

Selection checklist for the 15335

• Supply: 230 V AC at 50 Hz.
• Housing: 18 mm wide (2 modules of 9 mm), screw terminals.
• Daily pattern: one repeating 24 h program is enough.
• Load: within the lamp or load table above, or through a contactor.
• Ambient: -25 to 50 °C operating range suits the board location.
• Power reserve: matches how often supply interruptions are expected.

Installation and commissioning of the 15335

Snap this unit onto the DIN rail in the final-distribution board, wire the supply and load circuits with the terminal type listed above, and set the clock and the on-off segments against a known time reference. Terminals are rated IP20 B, so the unit belongs inside a closed enclosure.

After setting, run the circuit through a full on-off cycle before leaving site. Re-check the clock after the first supply interruption, and plan a battery check at the interval stated on the datasheet if the version has a battery.

Where the 15335 fits in Oman and the GCC

Typical uses are exterior and landscape lighting, car-park and corridor lighting, shop-window and signage circuits, and scheduled operation of small fans or pumps. In hot, dusty switchrooms the limit is the board temperature: compare the operating range on the datasheet with the actual temperature inside the enclosure, not the room, and ventilate or shade the board where needed.

Documents and quotation

The official Schneider Electric datasheet of this unit is attached on this page for download, so every figure above can be checked against the source.

To request a quotation, send us the part number 15335, the quantity and the delivery location through the RFQ form. Seven Star LLC replies with availability and lead time.