| Installation safety and protective earth |
Installation and service are for qualified personnel. Use the supply indoors in a dry, well-ventilated, restricted-access location. Disconnect input power and prevent accidental reconnection before wiring or maintenance. Connect FG / PE to protective earth, keep liquids and foreign objects out, and avoid touching hot surfaces. Do not disassemble, modify or replace parts yourself. |
| Vertical DIN rail installation |
Mount vertically with the input terminals below and output terminals above. Tilt the unit backwards, engage the upper rail edge, slide it down to the stop and press the bottom until it locks; gently check the latch. Use TS35/7.5 or TS35/15 rail. Non-standard orientation, poor ventilation or high ambient temperature requires appropriate derating. |
| Ventilation and thermal layout |
Keep at least 40 mm clear above, 20 mm below and 5 mm at each side; the manual recommends a 5–15 mm side allowance and 15 mm next to a heat source. Keep all ventilation openings clear. Apply the selected model’s input and temperature curves together; an operating-temperature range alone does not promise full load. |
| Copper wiring and current distribution |
Use copper conductors with insulation rated at least 80°C, such as UL1007 or UL1015. The manual pairs AWG 20 / 18 / 16 / 14 / 12 / 10 / 8 / 6 / 4 / 2 with recommended equipment currents 3 / 6 / 10 / 16 / 25 / 32 / 40 / 63 / 80 / 100 A and cross-sections 0.5 / 0.75 / 1 / 1.5 / 2.5 / 4 / 6 / 10 / 16 / 25 mm². These are manual recommendations, not exact AWG conversions or permission to exceed this model’s terminal capacity. With five or more wires, reduce each recommended wire current to 80%. Insert all strands, secure them and wire all output terminals to distribute current. |
| Terminal preparation |
Use the selected connector’s stripping lengths and capacities in the main mechanical table; the manual’s generic 5 mm stripping example does not override them. Blank types use screw terminals, LA types use tool-free lever-actuated terminals and PI types use push-in terminals. For the screw-terminal type use 5.8 kgf·cm (5 lb-in); a 3 mm slotted screwdriver is recommended. Use the separate DC and AC DC OK relay-contact ratings stated above, rather than the manual’s abbreviated contact summary. |
| Branch protection reference |
At 230 V AC the manual lists 10 units on a C16 breaker and 10 on a D16 breaker for XDR-120, and a recommended fuse specification of F6.3A / 300 V. Select protection for the actual installation and inrush conditions. The fuse entry is a specification reference, not a separately supplied accessory or permission for unqualified internal replacement. |
| Remote-control document boundary |
Follow this model’s main-datasheet remote thresholds: low level or an open control circuit turns the output ON, and the specified external high level turns it OFF. The manual’s section 4.3.1 repeats the +5V_AUX short-to-ON wording used by the 240 W and higher products; it must not be applied to the XDR-75 / XDR-120 RC+ and RC− interface. |
| Fault handling and manufacturer warranty |
After a fault, remove its cause before restarting. For overvoltage, cycle AC after correcting the condition. If overheating occurs, disconnect AC, clear the ventilation / loading cause and let the unit cool to normal temperature (the manual advises approximately tens of minutes) before re-powering; this service procedure is separate from the main specification’s automatic thermal-recovery behavior. If the fault persists, contact MEAN WELL or an authorized distributor. The manufacturer states a 5-year warranty under normal usage; unapproved part replacement or modification can affect it. |
| Complete-system EMC verification |
Verify EMC with the supply installed in the finished equipment and connected to a representative load. Wiring, assembly and the application affect the result. Retain the selected model’s EMC conditions; component test results and this EMI guidance do not certify the complete equipment. |