Schneider Electric RE17LAMW Harmony Timer Relay

RE17LAMW: modular timing relay with 0.1 s to 100 h timing

The RE17LAMW is a Schneider Electric Harmony timer relay in the modular timing relay format, component name RE17L. It offers a single timing function (A), a solid state output, a rated supply of 24–240 V AC/DC, and a body 17.5 mm wide. Time can be set from 0.1 s to 100 h through 7 selectable ranges. Seven Star LLC supplies the RE17LAMW in Oman and the GCC as an independent supplier based in Muscat.

Mounting, terminals and environment for the RE17LAMW

The body is 17.5 mm wide, 90 mm high and 72 mm deep and weighs 0.068 kg. It fits a 35 mm DIN rail conforming to IEC 60715. Field wiring uses Screw terminals, 1 × 0.5–1 × 3.3 mm² (20 AWG–12 AWG) solid without cable end, among other permitted conductor combinations, tightened to 0.6–1 N.m conforming to IEC 60947-1.

Protection degrees are listed as IP20 (terminal block) conforming to IEC 60529; IP40 (housing) conforming to IEC 60529; IP50 (front panel) conforming to IEC 60529. Humidity tolerance is 93 % without condensation conforming to IEC 60068-2-30. Vibration resistance is 20 m/s² (f= 10–150 Hz) conforming to IEC 60068-2-6. Operation is listed over -20–60 °C and storage over -30–60 °C. Inside a closed Gulf enclosure in summer the air around a timer sits well above room temperature, so leave space around this unit and keep it away from contactor coils and drives.

Timing functions and time ranges of the RE17LAMW

This unit lists the following timing function, each named by its datasheet code.

• A: Power on-delay. The timing period begins when the supply is applied, and the output changes state only after it has run out.

The setting covers 0.1 s to 100 h in total, split across these ranges: 0.1 to 1 s; 1 to 10 s; 6 to 60 s; 1 to 10 min; 6 to 60 min; 1 to 10 h; 10 to 100 h. The datasheet gives a setting accuracy of ± 10 % of full scale at 25 °C conforming to IEC 61812-1 and a repeat accuracy of ± 0.5 % conforming to IEC 61812-1, with drift of ± 0.05 %/°C against temperature and ± 0.2 %/V against supply voltage. Pick the range whose upper end is closest above the time you need, because accuracy is quoted as a share of full scale.

Technical specifications of the RE17LAMW

Selection and installation checklist for the RE17LAMW

• Function: confirm the timing mode (A) against the sequence diagram on the datasheet.
• Time: choose a range between 0.1 s to 100 h with the upper limit just above your set point.
• Supply: 24–240 V AC/DC, with the wiring and source verified before energising.
• Output: solid state output, checked against the real load current and voltage.
• Fit: 17.5 mm wide, with the mounting type matching the panel.
• Front panel: Selector switch front panel; Without test button.

Isolate and prove dead before wiring, mount this unit, connect the supply and output terminals, set the function and range, then run the sequence with a test load before the plant is released. Re-check the set time after any change to supply voltage or ambient conditions, and keep a record of the final setting on the panel drawing.

Supply and output of the RE17LAMW

This unit is rated for 24–240 V AC/DC over a range of 0.85–1.1 Us at 50–60 Hz ± 5 %, drawing 0–3 VA at 240 V AC. Because the supply span is wide, a single part can cover several control voltages, though the lowest figure on the span is the practical minimum for a dependable pick-up. The datasheet immunity to microbreaks is 20 ms.

The output is solid state with a nominal current of 0.7 A and a maximum switching voltage of 250 V AC/DC. With no moving contacts the output does not wear mechanically, and the datasheet lists an electrical durability of 100000000 cycles. A solid state stage leaks a little when off, which the datasheet rates at up to 5 mA, so very small loads such as indicator lamps or high-impedance inputs should be checked for false holding.

The RE17LAMW among Harmony timer relays

Width, output type, supply span and function set separate the references. The table compares this unit with its closest neighbours from the same lane.

Where the RE17LAMW is used in Oman and the GCC

In Omani and wider GCC plants a timer of this type is typically chosen for delaying the start of fans, pumps or auxiliary drives after a supply is restored so that several loads do not start together, sequencing conveyors, dosing skids and package plant equipment and holding back a permissive until a process has settled. Oil and gas skids, power auxiliaries, desalination and water treatment packages and general industrial panels all use this class of device, and the combination of heat, dust and humidity makes sealed enclosures and clean terminal work important. Where timing is part of a safety function, the project specification and a suitable safety device take precedence over a general-purpose timer.

Information to send with an RFQ for the RE17LAMW

• Exact reference RE17LAMW and the quantity.
• Required timing function and set time.
• Control supply voltage and whether AC or DC.
• Load type and current on the output.
• Any matching socket, base or accessory needed.
• Delivery location and required date.

Documents and quotation

The Schneider Electric datasheet for the RE17LAMW is attached on this page and carries the full specification and function diagrams. Its date is 7 Nov 2026, as printed on the manufacturer’s document, so check the status of the part before ordering.

Send the reference RE17LAMW, quantity and delivery location and Seven Star LLC will reply to your request. We supply as an independent supplier based in Muscat and do not act for the manufacturer.