Specifications Parameter Specification Product Range Harmony XB2 Device Type Contact Block (Accessory for push button operators) Model XB2-BVB4LC Contact Configuration Likely 1 NO + 1 NC contacts (verify specific suffix) Contact Arrangement • NO: Normally Open contact • NC: Normally Closed contact Contact Rating 10A at 250V AC (resistive load) 6A at 250V AC (inductive load, cosφ=0.4) Rated Thermal Current 10A Rated Impulse Voltage 6kV Electrical Life 1 × 10⁶ operations at rated load Mechanical Life 10 × 10⁶ operations Contact Material Silver alloy Initial Contact Resistance ≤50mΩ Dielectric Strength 2500V AC, 50Hz, 1 minute Insulation Resistance >100MΩ at 500V DC Terminal Type Screw clamp terminals Wire Range 0.5-1.5mm² (AWG 20-16) stranded wire Terminal Torque 0.5-0.6 N·m Mounting Snap-on to XB2 operators and other contact blocks Stacking Capability Can stack multiple contact blocks Dimensions (W×H×D) Approximately 36×36×30mm (excluding terminals) Weight Approximately 20-30g Ambient Temperature -25°C to +70°C (operation) Storage Temperature -40°C to +85°C Standards Compliance IEC/EN 60947-5-1, UL 508, CSA C22.2 No. 14