The Schneider Electric Harmony XB4 is a three-position key-operated switch with positions at -45°, 0° and +45°, without spring return. It has a round head, a chrome-plated metal bezel and a Zamak fixing collar. The lock is a Ronis 455 type, with the key removable in the centre position.

The switch has two NO contacts, positive opening operation and screw terminals. The mounting diameter is 22 mm and the mechanical durability is up to 1,000,000 cycles.

• Type: Key-operated
• Colour: Black
• Positions: 3
• Position angle: ±45°
• Contacts: 2 NO
• Terminal type: Screw
• Wire cross-section: 1 × 0.22 mm² without cable end
• Mounting diameter: 22 mm
• Bezel material: Chrome-plated metal
• Fixing collar material: Zamak
• Lock: Ronis 455
• Key removal position: Centre
• ISO terminal description: n°1 (23-24)NO(13-14)NO
• Rated insulation voltage (Ui): 600 V
• Conventional thermal current (Ith): 10 A
• Rated impulse withstand voltage (Uimp): 6 kV
• Rated operational currents (Ie): 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
• Contact material: Silver alloy (Ag/Ni)
• Short-circuit protection: 10 A gG fuse
• Pollution degree: 3
• Degree of protection: IP69/IP67/IP66, IP69K, NEMA 13, NEMA 4X
• Impact resistance: IK06
• Protective treatment: TH
• Torque: 0.14 N·m without change in electrical state
• Tightening torque: 0.8–1.2 N·m
• Storage and operating temperature: -40 to 70 °C
• Vibration resistance: 5 gn (f = 2–500 Hz)
• Shock resistance: 30 gn (18 ms) and 50 gn (11 ms)
• Standards: CSA C22.2 No. 14, EN/IEC 60947-5-1, EN/IEC 60947-1, JIS C 4520, UL 508, EN/IEC 60947-5-5, EN/IEC 60947-5-4
• Certifications: RINA, UL, BV, LROS (Lloyd’s Register of Shipping), DNVGL, CSA
• Height: 47 mm
• Width: 30 mm
• Depth: 86 mm
• Weight: 0.127 kg