Lovato 11BG0910A024 Mini Contactor 9 A AC-3, 24 V AC Coil

Lovato 11BG0910A024 mini contactor, 9 A AC-3, 24 V AC coil

The Lovato 11BG0910A024 is a compact three-pole contactor of the BG09 mini series with a 24 V AC coil. It is rated 9 A in AC-3 and 20 A thermal, in a body of 178 g that fits small control panels where a standard BF09 would be too large. Seven Star LLC supplies the 11BG0910A024 in Oman and the GCC as an independent supplier in Muscat.

The code starts with the 11 prefix that forms part of the catalogue reference, then BG09 for the mini frame and 9 A, 10 for the auxiliary contact arrangement, A for AC coil and 024 for 24 V. Low-voltage coils are chosen where the control circuit is a safety extra-low voltage, for example when a PLC or a 24 V transformer drives all contactors in the panel.

11BG0910A024 technical specifications

Where a mini contactor makes sense

The BG series packs the same electrical idea as the BF series into a smaller body. The compromise appears in the ratings: the electrical life at AC-3 is 500,000 operations, a quarter of the 2 million of the BF09, and the dissipation per pole is higher at 4 W at Ith. The device suits small machines with moderate switching frequency, and a BF09 should be preferred where the starter will cycle constantly.

The 24 V coil draws 30 VA on closing and 4 VA while held, a figure that must be added up when many contactors share one control transformer. A panel with ten of them needs about 300 VA during a simultaneous start, though in practice starts are staggered.

11BG0910A024 with 24 V control

Because the coil is AC 24 V, the unit connects to a 24 V AC transformer winding rather than directly to a 24 V DC supply. If the panel uses a 24 V DC control bus, a DC-coil version from the same family or an interposing relay is required. Check this before ordering, since AC and DC coils look identical on the shelf.

11BG0910A024 selection checklist

• Motor current of 9 A or less with a light to moderate duty cycle
• 24 V AC control supply at 50 or 60 Hz
• Auxiliary contact arrangement of the 10 version
• Panel space available for a mini frame
• Fuse choice from the listed 20 A gG or 10 A aM
• Expected number of operations against 500,000 electrical life
• Conductor size between 0.75 and 2.5 mm²

Installing and maintaining the 11BG0910A024

Fix on 35 mm rail or by screws; power and coil terminals take 0.8 to 1 Nm, which is lower than the BF series, so use a correctly sized driver. Conductors are limited to 2.5 mm², which suits 9 A but should be kept in mind for long cable runs.

With a small contactor the best maintenance habit is to keep an eye on the operations count. When a machine passes several hundred thousand starts, schedule a replacement at the next stop instead of waiting for a weld or a coil failure.

Typical 11BG0910A024 applications in Oman and the GCC

In the Gulf the mini contactor is typical inside packaged skids, small HVAC units and instrument enclosures where a 24 V control circuit is standard. The compact body allows more equipment in a panel that must be sealed against dust, while internal temperatures remain below the 70 °C AC-1 point.

Mini and standard contactors compared

One more design point concerns surge suppression and the control source. An AC coil of 24 V is often supplied from a small control transformer, whose regulation can sag when several contactors close at once. If pick-up problems appear during simultaneous starts, check the voltage at the coil terminals during the event and compare it with the 75 percent pick-up limit. Staggering the starts through the PLC program or enlarging the transformer normally solves the issue. The compact size makes it tempting to crowd units together, but a gap helps both cooling and later maintenance access.

Information to send with an RFQ for the 11BG0910A024

• Part number 11BG0910A024 and quantity
• Load or motor data
• Control voltage type and level
• Switching frequency
• Temperature in the panel
• Delivery location

Site conditions in Oman for the 11BG0910A024

Low-voltage switching and protection devices in Oman often sit in motor control centres and outdoor panels where internal temperatures are high for much of the year. When you select the 11BG0910A024, check its rated values at your real ambient temperature, as stated in the manufacturer documentation, and confirm the coordination with upstream protection and with the motor or load it serves. Short-circuit levels differ from site to site, so verify the breaking capacity required at the point of installation.

Standardising ratings and coil voltages across a project reduces the number of spare part numbers that need to be stocked. Keeping a small stock of the 11BG0910A024 and recording settings such as trip ranges or ramp times shortens repair work during a breakdown.

Documents and quotation

Send the part number 11BG0910A024 and we will confirm the documents available for it, such as the technical data sheet, wiring diagram and instruction sheet, together with availability and lead time.

Seven Star LLC is an independent supplier in Muscat and is not an official channel of the manufacturer. Share the quantity, delivery location and project reference with the request and we will answer with a formal quotation.