Product: Power Automatic Transfer Switch, Model W2R100 What it does Automatically transfers power between normal and backup sources to maintain continuous power when the main supply becomes abnormal. Designed for AC systems at 50 Hz or 60 Hz with rated voltage AC 400 V and insulation voltage AC 690 V. Fast backup activation preserves continuity, reliability, and safety of critical circuits. Key benefits Immediate backup: Backup supply is engaged rapidly to minimize interruptions to equipment and services. Compact and railready: Railtype design fits PZ30 distribution boxes for tidy, spacesaving installation. Durable operation: Electrical life up to 2000 operations and mechanical life up to 5000 operations. shortcircuit withstand: Shortcircuit current at rated conditions 50 kA and rated impulse withstand voltage 8 kV. Clear control: Builtin control circuit with rated control voltage AC 220 V, 50 Hz and auxiliary circuit containing two independent relays, each with two sets of contacts. Main specifications Model: W2R100 Item type: Power Automatic Transfer Switch Rated current Ie: 100 A Rated voltage Ue: AC 400 V, 50 Hz Insulation voltage Ui: AC 690 V, 50 Hz Poles: 3P Use category: AC33iB Shortcircuit current at rated conditions: 50 kA Rated impulse withstand voltage: 8 kV Control circuit rated voltage Us: AC 220 V, 50 Hz Correct working range for control voltage: 85% Us to 110% Us Life: Electrical 2000 times, Mechanical 5000 times Auxiliary circuit: 2 independent relays, each relay includes 2 sets of contacts SCPD reference: RT160063A Installation and maintenance Designed for railtype mounting compatible with PZ30 distribution boxes. Compact structure simplifies wiring, installation, and maintenance. Follow local electrical codes and the included user manual for safe installation. Package contents 1 x Switch 1 x User Manual Important operating notes The coil in the control circuit operates normally only within 85% to 110% of the rated control voltage. Voltage below this range can cause coil heating and potential burnout. After transfer, the internal switch may leave the control circuit coil energized briefly; improper control voltage or abnormal conditions can damage the coil. and old product types may be at random. Please ensure this is acceptable before ordering. Typical applications Residential backup circuits for essential loads such as refrigerators, heating controls, and lighting. Small offices and retail stores to maintain power to servers, pointof systems, and communication equipment. Light industrial or workshop distribution panels where uninterrupted power to control circuits and essential machinery is required. Why choose this model W2R100 provides reliable automatic transfer functionality with robust electrical ratings and a compact, railmounted form factor for easy integration into PZ30 distribution boxes. Its control circuit and auxiliary relays offer clear operation for typical emergency power systems. Note: Read the user manual and verify control supply voltage before installation to prevent coil damage.