Schneider Electric XB4BK133B5 Illum. 3-Pos Selector Green 24 V

XB4BK133B5 illuminated selector switch with green handle

The XB4BK133B5 is an illuminated selector switch from the Harmony XB4 metal range, with a green standard handle that lights up from an integral universal LED. It has three positions at ±45°, a contact set of 1 NO + 1 NC and a rated supply of 24 V AC/DC at 50/60 Hz. Seven Star LLC supplies the XB4BK133B5 in Oman and the GCC as an independent supplier based in Muscat.

The lit handle shows at a glance that a mode is selected, which is the reason to pick this version over a plain selector. The details below follow the datasheet.

XB4BK133B5 technical specifications

Positions and contacts of the XB4BK133B5

The three positions give a centre and two sides, held in place, with a 1 NO + 1 NC arrangement. The datasheet quotes a lower mechanical life for this three-position version: 500000 cycles. Contacts are 1 NO + 1 NC with terminal markings 13-14 and 21-22, and the datasheet records positive opening for the NC contact per IEC 60947-5-1 appendix K. Operating torque is 0.14 N.m NO changing electrical state.

LED supply and lighting data of the XB4BK133B5

The light source is a universal LED with an integral base. Rated supply voltage is 24 V AC/DC at 50/60 Hz, with limits of 19.2–30 V DC and 21.6–26.4 V AC, and the current consumption is 18 mA. The datasheet gives a service life of 100,000 h at rated voltage and 25 °C and a surge withstand of 1 kV. This is the 24 V version, which fits PLC panels and low-voltage control circuits and keeps the lamp supply separate from mains. The signalling is steady, not flashing.

Contact ratings and environment of the XB4BK133B5

Electrically, this unit comes down to a few figures. Thermal current is 10 A, insulation voltage is 600 V (pollution degree 3), impulse withstand is 6 kV, and the contacts are silver alloy (Ag/Ni) with slow-break operation. A 10 A gG cartridge fuse is the protection named in the datasheet. For control duty, size the circuit from the ratings in this list.

• 3 A at 240 V, AC-15, A600
• 6 A at 120 V, AC-15, A600
• 0.1 A at 600 V, DC-13, Q600
• 0.27 A at 250 V, DC-13, Q600
• 0.55 A at 125 V, DC-13, Q600
• 1.2 A at 600 V, AC-15, A600

Impact protection is IK04. Under vibration the datasheet quotes 5 gn (f= 2–500 Hz). Shock resistance on the datasheet is 30 gn (duration = 18 ms) for half sine wave acceleration and 50 gn (duration = 11 ms) for half sine wave acceleration. For operation the datasheet gives an ambient range of -40–70 °C. Ingress protection is listed as IP66, IP67, IP69, IP69K.

XB4BK133B5 compared with the other illuminated selectors

Selection and installation of the XB4BK133B5

• Lamp supply: 24 V AC/DC at 50/60 Hz (limits 19.2…30 V DC and 21.6…26.4 V AC).
• Positions: 3 positions +/- 45°.
• Contacts: 1 NO + 1 NC, positive opening on the NC.
• Handle colour: green.
• Depth behind panel: 70 mm.

Installation starts with a 22.5 mm hole. Tighten to 0.8–1.2 N.m, land the wires on the screw clamp terminals (≤ 2 × 1.5 mm² with cable end and ≥ 1 × 0.22 mm² without cable end) and use a matching screwdriver, either Philips or pozidriv no 1 or a flat 4 or 5.5 mm blade. Take the lamp supply from the correct control circuit, not from the switched contact.

Commissioning check: confirm that the handle lights at the rated voltage, that each position gives the expected contact state, and that the lamp circuit voltage matches the label. Note the result in the commissioning record and test again whenever the circuit is modified.

Where the XB4BK133B5 is used in Oman and the GCC

An illuminated selector is typical for mode selection on motor control centres, pump controls and process panels where operators need to see which mode is active from a distance, including in bright outdoor sunlight or in dim plant rooms. The sealed metal body is suited to dusty, hot environments.

Because the lamp is built in, a failed LED means replacing the handle block rather than a bulb. Keep one spare on the shelf for panels that cannot tolerate a long outage, and test the lamp at every maintenance round.

Information to send with an RFQ for the XB4BK133B5

An enquiry for this unit is quickest when it names the quantity, the delivery point and the required delivery date. State the lamp supply voltage (24 V AC/DC or 230-240 V AC), the number of positions and the handle colour. Where the unit replaces one already in service, send a picture of its label so we can compare references before quoting.

Documents and quotation

The official Schneider Electric datasheet for this unit is attached on this page, so each figure above can be checked against the source document.

To request a quotation, send the part number XB4BK133B5, the quantity and the delivery location through the RFQ form. Seven Star LLC replies with availability and lead time.