Product: Transfer Switches Models included or available: LW5D16/D0723.3L (color code LW5D16 D0723.3L) and SZD1163/400010 (63A, 4pole) Overview A compact, reliable transfer and isolator switch solution for three phase control and circuit isolation. Available as the LW5D16/D0723.3L model for 16 A applications and as the SZD1163/400010 4pole load break isolator for highercurrent needs. Plastic housing and clear on off operation make installation and daily use straightforward. Key features and specifications Models: LW5D16/D0723.3L (16 A) and SZD1163/400010 (63 A, 4P) Function: Transfer switch and load break isolator with on off operation and turnbutton start stop control; SZD11 variant is padlockable for secure isolation Phases: 3 phase operation for LW5D16 model Current ratings: LW5D16: Conventional heating current Ith 16 A SZD1163/400010: Rated current 63 A Voltage ratings: Rated insulation voltage Ui: 500 V (LW5D16) Rated working voltage AC: 500 V and 440 V Rated working voltage DC: 220 V SZD11 variant rated up to 660 V for load break applications Switching categories and currents: AC15 category: rated working current Ie 2 A at AC500 V/440 V DC13 category: rated working current Ie 0.14 A at DC220 V Material: durable plastic housing Poles: SZD11 variant is 4 poles; LW5D16 is suitable for three phase switching Chemicals: no concern chemicals reported Why choose this transfer switch Clear control and isolation: simple on off operation with a visible switch position for safe, unambiguous control of circuits. Flexible compatibility: LW5D16 covers typical 16 A three phase control tasks; SZD1163/400010 provides a 63 A, 4pole load break isolator option where higher current and secure padlock isolation are required. Compact and easy to mount: plastic construction keeps weight low and simplifies panel integration. Electrical performance: specified working voltages and switching category ratings allow predictable behavior in common AC and DC control circuits. Practical use scenarios Industrial control panel: use LW5D16/D0723.3L to switch and isolate three phase control circuits for motor starters and auxiliary equipment. Generator transfer and maintenance isolation: use the SZD1163/400010 4pole load break isolator to isolate a generator or distribution branch, with padlock option for lockout during service. Machinery start stop control: use the transfer switch in control cabinets to provide a reliable manual start stop and isolation point for production equipment. What is included Transfer switch unit consistent with the chosen model number and ratings. Confirm the required model and current rating before ordering to match application needs. Note Select the LW5D16/D0723.3L for 16 A three phase switching or the SZD1163/400010 for 63 A, 4pole load break isolation. Ensure wiring and protective devices match the rated currents and voltages for safe operation.