Schneider Electric XB4BD912R10K 10k Potentiometer Head XB4

XB4BD912R10K: 10 kΩ linear potentiometer head, XB4 22 mm

The XB4BD912R10K is a Schneider Electric Harmony XB4 potentiometer assembly for a 22 mm hole. According to its datasheet title it is a head with a mounting base and a 10 kΩ potentiometer, finished with a metal bezel and a knurled knob with white marking. Seven Star LLC supplies the XB4BD912R10K in Oman and the GCC as an independent supplier based in Muscat.

Its job is to let an operator set an analogue reference by hand: a speed set point for a drive, a level or flow set point, a dimmer level or a trim on a signal conditioner. The datasheet shows a linear characteristic with a cermet resistive element, a 10000 Ω value and a tolerance of ± 10 %, which together describe a conventional panel-mounted control potentiometer.

How a 10 kΩ linear potentiometer is used with XB4BD912R10K

A potentiometer has three terminals: the two ends of the resistive track and a wiper. Connected as a voltage divider across a supply or reference, the wiper voltage rises in proportion to knob angle because the characteristic is linear. A 10 kΩ track is a common choice for the analogue reference input of a variable-speed drive, since it draws little current from the reference. The datasheet quotes a power rating of 1 W at 70 °C and a supply limit of 30 V AC or 42 V DC, so it belongs on low-voltage signal circuits, never on mains.

The datasheet does not publish a terminal diagram for the XB4BD912R10K in the pages we reviewed beyond the mechanical drawing, so confirm the wiring of the three terminals against the manufacturer’s installation sheet that accompanies the part. Keep the wiper lead short and shielded where the run is long, as noise on a wiper line goes straight into the analogue input.

Sealing, temperature and approvals of the XB4BD912R10K

The metal bezel carries protection ratings of IP66, IP69 and IP69K, and the datasheet lists UL type 4X/13 and IK06. Operating and storage temperature is -40 to 70 °C, vibration resistance 5 gn from 2 to 500 Hz, and the shock levels are 30 gn for 18 ms and 50 gn for 11 ms. The electrical protection class is stated as Class II, and the high-pressure washer resistance is the same 7000000 Pa at 55 °C from 0.1 m as the rest of the XB4 range.

The approvals listed are CSA, BV, UL listed. As always, accept these for this unit only where the datasheet lists them for this exact reference.

Panel mounting of the XB4BD912R10K

The assembly fits a 22.5 mm hole. The overall dimensions in the datasheet are 47 mm high, 30 mm wide and 82 mm deep, with a net weight of 0.095 kg. The depth is larger than a push-button because the potentiometer body and its terminals sit behind the base, so check the rear clearance of a shallow door.

The datasheet lists compatibility with a 6 mm shaft, which is the shaft diameter the head and knob arrangement is built around. A legend plate with the scale or the function should be fitted next to the knob, since a bare knob gives no indication of direction or range.

Typical uses of XB4BD912R10K in Oman and the GCC

Panel potentiometers are used for the speed reference of drives on fans, pumps and conveyors, for dosing-pump and chemical feed rate control, for lighting dimmers and for trimming set points on process controllers. In desalination, water treatment and utilities in Oman and the GCC, such knobs are found on local control panels where an operator needs a hands-on adjustment beside the machine. The sealed metal head tolerates dust and washdown on these sites.

Selection checklist and RFQ information for XB4BD912R10K

Send the points below so that the part number can be confirmed against the datasheet and checked for availability in a single reply.

• Required quantity and the full part number XB4BD912R10K.
• Panel thickness and the position of any anti-rotation key or nameplate.
• Rear clearance behind the panel, checked against the body depth.
• The target device: drive, controller or signal conditioner, and the reference range it expects.
• Confirmation that a 10 kΩ linear track suits the input impedance of that device.
• Scale or legend plate requirements, and the delivery location in Oman or the GCC.

Wear, life and calibration with XB4BD912R10K

The datasheet gives a mechanical durability of 50000 cycles, much lower than a push-button or selector because the wiper rubs a resistive track. For a set point changed a few times a shift that is decades of service, but a potentiometer used as a continuous trimmer will wear faster. Cermet tracks are known for good stability, though the stated resistance tolerance of ± 10 % means two knobs at the same angle do not give exactly the same output, so calibrate the scale of each machine against a reading instead of relying on the knob marking.

When the knob feels rough or the reference jumps, replace the unit rather than clean it, and note that this unit is a head and base assembly, so the whole assembly is replaced. Keep one spare on the shelf for any process where loss of the set point stops production.

Technical specifications of the XB4BD912R10K

Documents and quotation

The Schneider Electric datasheet for the XB4BD912R10K is attached on this page for your technical file. It carries the electrical, mechanical and environmental data summarised above, together with dimension and wiring drawings.

To request a quotation, send the part number and quantity through the enquiry form and we will reply with availability and delivery terms. Seven Star LLC is an independent supplier and does not act for the manufacturer, so please check the datasheet against your project requirements before ordering.