Omron MY4N-GS 4PDT Miniature Power Relay with LED

MY4N-GS: four-pole plug-in power relay for multi-circuit switching

The Omron MY4N-GS is the four-pole version of the MY-GS miniature power relay, with four changeover contacts, a LED operation indicator and mechanical indicators on a 14-pin base. It is chosen when one coil must switch several separate circuits without cascading relays. Seven Star LLC supplies the MY4N-GS in Oman and the GCC as an independent supplier in Muscat. This page explains the code, ratings and ordering points.

• MY is the miniature plug-in power relay series.
• 4 means four poles (4PDT) on a 14-pin socket footprint.
• N means a LED operation indicator plus mechanical indicators.
• No I, D or CR means no latching lever and no coil surge absorber.
• GS is the series suffix; the datasheet ordering list adds -R and the coil voltage.

With four poles the current rating per contact drops compared with the 2-pole relay, so the choice of MY4N-GS is usually about circuit count rather than heavy load.

MY4N-GS technical specifications

The 6 A per-pole carry rating applies at 50°C ambient and falls to 3 A at 70°C, a point that deserves attention in hot enclosures. Values are from the Omron MY-GS datasheet.

How MY4N-GS works and what the indicators show

One coil moves one armature that actuates four sets of changeover contacts. The relay can therefore be used to duplicate a signal to several systems, for instance feeding a PLC input, an alarm panel, a lamp and a trip circuit from a single event, while keeping circuits electrically separate.

The LED lights when the coil is energised and the two mechanical indicators show the contact position. Because the 4-pole relay has 14 pins, wiring errors are easier to make than on the 8-pin version, so the indicators and a tested terminal drawing save time during commissioning.

Coil ratings for MY4N-GS

The MY4N-GS accepts the same range of AC and DC coils as the 2-pole relay. Coil data are shown below; the coil does not change with pole count.

AC coil data from the datasheet (rated current measured at 23°C):

DC coil data from the datasheet (values in brackets are for models with LED indicators):

Must-operate voltage is 80% of rated voltage maximum for AC coils (30% minimum must-release) and the same 80% maximum for DC coils with 10% minimum must-release. Maximum voltage is 110% of rated. For specified characteristics, apply the rated voltage to the coil.

Sockets and related parts for MY4N-GS

The MY4N-GS plugs into 14-pin sockets: PYFZ-14-E, PYF14A-N, PYF-14-PU or PY14-02. The 2-pole relay MY2N-GS fits 8-pin sockets and is smaller in wiring effort. The MY4IN-GS adds a latching lever to the same body for manual test of sequence circuits.

Sockets are ordered separately. The datasheet also mentions the PYC-A1 and PYC-P retaining parts for joining socket and relay, and notes that a relay with a latching lever and a PCB-terminal socket need the PYC-P mounting bracket to be checked first.

Selection and ordering checklist for MY4N-GS

Settle the following before requesting a quotation for MY4N-GS.

• Count the circuits to be switched; if two suffice, MY2N-GS has a higher 10 A rating per pole.
• Choose AC or DC coil and its voltage.
• Check each circuit against 6 A at 250 VAC and de-rate at high ambient temperature.
• Pick a 14-pin socket type and mounting style.
• Decide whether surge absorption (diode or CR) is needed on the coil circuit.
• Plan labelling so each of the four poles is traceable on the schematic.

Installation, commissioning and maintenance of MY4N-GS

Seat the MY4N-GS fully in its 14-pin socket and lock it with the clip. Pin numbering must be checked, as the 4PDT layout has more terminals than the 2-pole relay.

• Keep the combined heat of adjacent relays in mind; do not stack at full load.
• De-rate the per-pole current to 3 A at 70°C.
• Use external suppression on inductive loads.
• Check each pole for correct operation with the mechanical indicator and a continuity test.
• Keep spare relays of the same coil voltage on site.

Typical MY4N-GS applications in Oman and the GCC

The MY4N-GS is commonly used in multi-signal repeat duties: status repeat from a motor starter to PLC, alarm and indication; auxiliary relays for valve limit-switch logic; and interposing relays in fire-and-gas and shutdown interfaces. In Oman and the GCC it appears in pump stations, utility switchgear auxiliary cabinets and process skid junction boxes.

Enclosures in the region can reach high temperatures, which is why the current de-rating at 70°C matters for the MY4N-GS. Spread relays across the rail and ventilate the cabinet.

MY-GS family compared with MY4N-GS

The MY-GS series covers several versions of the same relay body. This table shows where MY4N-GS sits among them.

Information to send with an RFQ for MY4N-GS

• Part number MY4N-GS, coil type and voltage.
• Quantity of relays and 14-pin sockets.
• Load on each pole.
• Panel temperature.
• Any need for diode or CR coil protection.
• Delivery location.

Documents and quotation

A datasheet for the MY-GS series is attached on this page with the model legend, coil data, contact ratings, certified ratings, socket list and precautions relevant to MY4N-GS.

Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer. Send the part number MY4N-GS with the coil voltage and quantity, and we will confirm availability and lead time for Oman and the GCC.