Use wago fuses where you need predictable let-through and clear time-current curves in the gG, aM, and gPV classes. For control and socket circuits, 250–500 V AC gG links at 0.5–20 A are typical; motor auxiliaries often prefer aM types to ride through inrush. In PV strings, 10×38 gPV at up to 1000–1500 V DC with 20–30 kA breaking capacity is common—check ambient and combiner heat rise before finalizing.
Finger-safe carriers with IP20 fronts reduce arc exposure during replacement. Specify wago fuse holders by footprint, terminal style, blown-fuse indication (LED 12/24 V or 110/230 V), and approvals. Look for IEC 60269 conformity for the link, UL/CSA for the holder, and terminal ratings matching 0.5–10 mm² Cu. Many carriers allow isolation with a pull-out drawer and padlock hole for LOTO on maintenance shifts.
Coordination depends on declared breaking capacity and upstream device limits. Document wago electrical protection against IEC 60269 fuse classes, IEC 60947 coordination with MCBs/MCIs, and enclosure thermal tests. Publish L/R for DC circuits, expected I²t at fault, and the maximum permissible voltage drop per pole; these values drive selectivity tables and feeder sizing.
Assemblies are built from 1-pole cartridges, spacers, and cross-connectors so a single rail can carry mixed auxiliaries and PV strings. With wago modular fuse systems, you can stack 5×20 next to 10×38, share PE/FE bars, and use plug-in jumpers for commoned supplies. Choose versions with test ports so technicians can probe live without removing the drawer.
Where safety-related control loops sit beside drives, fast-acting links protect I/O and field wiring while aM links ride motor starts. In DC strings, wago safety fuses with gPV characteristics limit reverse-current events between parallel arrays. Always check the holder’s DC voltage rating and the system’s maximum fault current under cold irradiance.
Fuse-backup of contactors and soft-starters requires verified let-through below the device’s I²t withstand. When pairing wago circuit protection devices with upstream MCCBs, use manufacturer curves to achieve partial or full selectivity; in control power, coordinate 6.3×32 gG links with secondary MCBs to avoid nuisance on transformer inrush.
Specify the link explicitly: gG for general purpose cables, aM for motors, FF/F/T for electronics, and gPV for photovoltaic arrays. For wago fuse links at 10×38, check watt-loss at rated current and confirm terminal temperature rise stays within the holder spec at your enclosure’s declared Ta. Keep 20 mm clearance ahead for drawer extraction with door-mounted gear.
Fuse carriers sit beside TOPJOB® S terminals, feed-throughs, and PE bars to keep geometry consistent; test ports align with standard bridging and measuring accessories. In luminaires and distributed boxes, pair holders with WAGO power supplies and pluggable connectors so clamp ranges match the selected conductors.
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