When replacing a battery disconnect or terminal cover on a boat or camper, begin with the part number and the original component's shape. Moeller uses a removable-key disconnect, a separate rotary battery switch and several flexible terminal-cover configurations; these are different parts with different purposes.
Recognize the two disconnect styles
A key-operated disconnect with a protective cap around the removable key. Mounting and electrical specifications must match the existing system.
Rotary one-battery on/off model with a specified 200 A continuous rating. Do not confuse it with Moeller's separate battery-selection switch models.
Switch MPN identification
Identify the cover colour and packaging
The individual red and black covers have separate MPNs. The packaged set contains both colours.
Check these details before replacing a part
Identify the switch as a removable-key or rotary-knob type. Before replacing it, document the existing wiring, number of battery circuits, mounting hole pattern, cable-terminal size and required current rating. Compare the original battery covers for cable entry diameter and the terminal shape. Do not assume a one-battery rotary switch matches every two-battery installation.
Moeller 042217-10 is a replacement strap and fastening-hardware item, not a battery switch or terminal boot. Confirm the box, restraint arrangement and required strap length before ordering.
Battery circuits should be isolated before working on terminal covers or switch connections. Follow the electrical-system manufacturer’s instructions and applicable marine electrical standards for wiring and protection.
Compare the available Moeller part listings
Open the exact part number for the listing details, condition and current availability.
Moeller 042219-10
Identify the removable key and tethered protective cap. Compare the bulkhead mounting and cable connection points.
Review listing and availability
Moeller 042228-10
Larger square-base rotary switch for a single battery circuit; note the red rotating knob and mounting footprint.
Review listing and availability
Moeller 099078-02
A single red flexible boot. Match the terminal shape and cable diameter rather than color alone.
Review listing and availability
Moeller 099079-02
Individual black terminal cover, not the packaged red-and-black pair.
Review listing and availability
Moeller 099078-10
The red/black set can be identified as a pair; it is different from either single-cover MPN.
Review listing and availability
Moeller 042217-10
Battery-box hold-down hardware. Confirm the original strap arrangement and actual required length before selecting a replacement.
Review listing and availabilityBattery enclosures and restraints
UsedRVParts viewing and pickup in Kelowna are available by appointment.