Schneider Electric A9C20732 iCT 25 A 2NO 230-240 V Contactor

A9C20732: two-pole 25 A contactor that still fits two DIN pitches

The A9C20732 is a Schneider Electric Acti9 contactor listed in the datasheet as: iCT 25A 2NO 230 to 240V 50Hz contactor. The A9C20732 keeps the narrow two-pitch body of the A9C20731 but carries two normally open poles, so both phase and neutral of a single-phase circuit can be switched together. It is the version to choose when an installation rule or the load itself asks for a full break of a 230 V circuit while panel space is short. Seven Star LLC supplies the A9C20732 in Oman and the GCC as an independent supplier based in Muscat.

The reference follows the Acti9 contactor coding: A9C family, 25 A, two poles with two normally open contacts (2P, 2 NO), and a 230 to 240 V AC 50 Hz coil. The datasheet lists the same 25 A AC-7A and 8.5 A AC-7B ratings and the same 250 V AC operational voltage as the single-pole version, so the second pole adds isolation of the neutral and not extra current per conductor.

Technical specifications of the A9C20732

Power circuit and coil data of the A9C20732

The rated operational current is 25 A AC-7A; 8.5 A AC-7B. Rated operational voltage: 250 V AC 50 Hz. Maximum power figure: 1.2 W at 250 V AC. Coil voltage: 230 to 240 V AC 50 Hz. Hold-in consumption: 2.7 VA. Inrush consumption: 9.2 VA. Rated insulation voltage: 500 V AC 50 Hz. Rated impulse withstand voltage: 4 kV. Mechanical durability: 1000000 cycles.

The extra pole is wired in the same way as the first and the coil is controlled through A1 and A2. The datasheet gives a hold-in consumption of 2.7 VA and an inrush of 9.2 VA, identical to the one-pole sibling, which tells us that the coil, not the pole count, sets the control-circuit load. The depth is quoted as 68.5 mm for this version against 60 mm for the single-pole contactor, a small difference that matters if a shallow enclosure door is used.

AC-7A and AC-7B ratings of the A9C20732: reading the load categories

Two numbers describe this contactor’s capability, one per load category. The higher figure is for AC-7A, meaning resistive and lightly inductive circuits such as heaters and lamp groups, and the lower one is for AC-7B, meaning small motors of appliance type. Industrial motors with heavy starting current are outside the intent of both categories and belong on a motor contactor with an overload relay.

Electrical durability in the datasheet: 100000 cycles IEC/EN 61095 25 A 50 Hz AC-7A; 30000 cycles IEC/EN 61095 8.5 A 50 Hz AC-7B; 30000 cycles IEC/EN 61095 50 Hz AC-7C.

How the A9C20732 compares with neighbouring iCT contactors

The A9C20731 differs in poles 1P against 2P here; contacts 1 NO against 2 NO here. The A9C20834 differs in poles 4P against 2P here; contacts 4 NO against 2 NO here; coil 220 to 240 V AC 50 Hz against 230 to 240 V AC 50 Hz here; width 36 mm against 18 mm here.

The table below lists the iCT references of this group with their main differences so that a purchase order can be checked against the family.

Selection checklist for the A9C20732

• Decide whether a two-pole break of phase and neutral is required, and wire accordingly.
• Note the 68.5 mm depth when choosing the enclosure or when fitting it behind a shallow cover plate.
• Match coil voltage and frequency to the control supply; this reference uses 230 to 240 V AC 50 Hz.
• Check the width of 18 mm (2 pitches) against free rail space and spare gaps for heat.
• Confirm the number of operations per day stays within the datasheet figure.

Mounting, wiring and maintenance of the A9C20732

During commissioning, energise the coil with the load circuit isolated and watch the action indicator; the datasheet lists local signalling by an action indicator on the front. Then close the load circuit and measure current and voltage drop. Switching frequency is limited to 100 switching operations/day, so check that a control program, a time switch or a building management output does not chatter the contactor many times per hour.

The datasheet lists the environment as -5 to 60 °C in operation and -40 to 70 °C in storage, relative humidity of 95 % at 55 °C, an altitude limit of 2000 m and pollution degree 2.

Where the A9C20732 is used in Oman and the GCC

A two-pole contactor of this size appears in single-phase water heating, in switched socket circuits for workshops and in air handling units for shops and offices. In Gulf hotels and residential towers the same device is often used to cut a whole room circuit from a master control or a keycard system when the room is vacated.

When the contactor sits near the heating element it controls, do not forget that the datasheet limits the ambient air to 60 degrees C in operation. A contactor mounted beside a storage heater in a small closed cabinet may exceed that during summer; ventilate the enclosure or move the contactor to a cooler row.

Information to send with an RFQ for the A9C20732

• Full reference (A9C20732) and quantity required
• Supply and control voltage at site, with the frequency
• Existing panel, rail and neighbouring devices it must fit beside
• Delivery location and timing
• Whether it is a spare, a like-for-like replacement or a new installation
• Load type and current: lighting, heating or motor-type

Documents and quotation

A datasheet for the A9C20732 is attached on this page. It lists the electrical, mechanical and environmental data summarised above, and it should be read together with the manufacturer’s installation instructions for the final design.

Send us the part number, quantity and application and we will confirm availability and a quotation. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer.