Schneider XB4BG21 Key Switch Selector, Harmony XB4, Metal, Black, 22mm, Key 455,

The Schneider Electric XB4BG21 is a 22.5 mm key switch selector in the Harmony XB4 range, providing 2-position non-spring-return operation with one normally open contact rated at 600 V insulation voltage. Its chromed metal body with Zamak mounting frame and Key 455 actuator restrict panel access to authorized personnel only.

Technical specifications:

• Commercial reference: XB4BG21
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Harmony XB4
• Product type: Key switch selector
• Mounting diameter: 22.5 mm
• Number of positions: 2, 90°, non-spring-return
• Contacts: 1 NO, slow-break, silver alloy (Ag/Ni)
• Rated insulation voltage [Ui]: 600 V (pollution degree 3), per IEC 60947-1
• Rated impulse withstand voltage [Uimp]: 6 kV, per IEC 60947-1
• Rated operational current [Ie]: 3 A at 240 V AC-15; 6 A at 120 V AC-15; 1.2 A at 600 V AC-15
• Thermal current [Ith]: 10 A, per IEC 60947-5-1
• Short-circuit protection: 10 A gG fuse, per IEC 60947-5-1
• Connection type: Screw terminal blocks, per IEC 60947-1
• Mechanical durability: 1,000,000 cycles
• IP protection rating: IP66, IP67, IP69, IP69K, per IEC 60529
• NEMA rating: NEMA 4X, NEMA 13
• Operating temperature: -40 to 70°C
• Body material: Chromed metal; mounting frame: Zamak
• Key type: Key 455, removal position: left side
• Dimensions (W x H x D): 30 x 47 x 86 mm
• Weight: 0.117 kg
• Certifications: UL, CSA, BV, DNV, LROS (Lloyd's Register of Shipping)

Features and benefits:

• Key 455 actuator with left-side key removal prevents unauthorized operation of the selector
• IP66, IP67, IP69, and IP69K rated with resistance to pressure washing at 7,000,000 Pa at 55°C
• 1,000,000-cycle mechanical durability for long, reliable service life
• Silver alloy (Ag/Ni) contacts deliver consistent, low-resistance switching performance
• Wide operating temperature range of -40 to 70°C suits harsh indoor and outdoor installations
• Multi-certified by UL, CSA, BV, DNV, and LROS for industrial, marine, and offshore use

Applications:

• Machine control panels requiring key-operated mode or circuit selection
• Industrial automation enclosures with restricted operator access
• Marine and offshore control systems
• Operator stations in manufacturing and production facilities
• Washdown environments in food processing or chemical plants

Compliant with IEC 60947-5-1, IEC 60947-1, IEC 60947-5-4, UL 508, CSA C22.2 No 14, JIS C8201-5-1, and JIS C8201-1. Part of the Schneider Electric Harmony XB4 range.

Also known as: Schneider XB4BG21, Schneider Electric XB4BG21, Harmony XB4 key selector switch, 22mm key-operated selector switch.