Quick Lock M25 Waterproof Plug Connector New Energy Li Ion Battery Energy Storage Connector
The Quick-Lock M25 Waterproof Plug is a heavy-duty circular power/signal connector featuring a 25 mm (M25×1.5 / PG25-class) threaded coupling body with a push-turn or spring self-locking mechanism that seats and seals in seconds—requiring no wrench, heat shrink, or junction box.
As the mid-large size in the quick-lock outdoor connector family, it sits above M12/M16/M20 and below M32, purpose-designed for branch-grade power feeds, battery/inverter interfaces, LED trunk lines, and machine power entries where 30-50 A carry capacity, IP67/IP68 sealing, and tool-light field assembly are required.
The "Quick-Lock" bayonet/push-lock coupling nut enables fast operation: align the keyway, push in, twist 30-60°, and it clicks locked with anti-vibration retention. To release, simply pull back the sleeve or twist reverse. Available in field-wireable screw-terminal and solder-cup versions for raw cable through the rear gland, or pre-assembled molded-with-cable versions for plug-and-play convenience.
Seconds to mate, not minutes: Quick-lock bayonet beats threaded M25 glands—ideal when installing multiple fixtures. One-handed operation with gloves, click and go. Re-openable for reuse.
50 A / 500 V class in a 25-mm shell: Highest current density in the M25 quick-lock tier—handles e-bike battery packs, LED display columns, small inverter I/O, 12/24/48 VDC power trees, and 230/400 VAC auxiliary feeds without stepping up to bulky M32.
True IP67 / IP68 when mated: Dual silicone O-ring + rear cable gland seal; survives 1 m/30 min immersion (IP67) or continuous deep washdown (IP68 option). Superior to open terminal blocks and RJ-style plugs in rain, hose-down, and dust storm conditions.
Field cut-to-length: Screw-terminal inserts accept 0.5-6 mm² (20-10 AWG) wire, cable OD 6-16 mm depending on gland insert—no factory cordset lead time, repair crushed runs in 10 minutes on site.
Keyed anti-miswire: Polarized keyway + optional color shells (black/blue/yellow) prevent L/N/G or +/- reversal on DC battery links.
Industrial contacts: Copper alloy pins, gold or silver flash, contact resistance ≤ 5 mΩ, ≥ 500-3000 mating cycles depending on build.
V0 flame + wide temp: PA66/PPA shell UL94-V0, -40 °C to +105 °C (some +120 °C variants), UV-stable for rooftop/solar applications.
- Coupling: M25×1.5 thread body, quick-lock bayonet/push-turn nut, knurled grip ring
- Pin counts: 2 / 3 / 4 / 5 / 6 / 8 (power), plus 2+3, 2+4, 2+5 power+signal hybrid inserts
- Termination: screw-terminal (field), solder cup, or pre-molded cable
- Gland: integrated strain-relief seal, PG/M insert swap for 6-16 mm OD cable
- Shell: PA66+GF / PPA, nickel-brass or stainless option for marine applications
- Seals: silicone O-rings, EPDM rear grommet; optional cap for unmated protection
- Contacts: copper alloy, Au/Ag plating, solid pin (not stamped foil)
| Parameter | Value (M25 quick-lock class) |
|---|---|
| Coupling size | M25 × 1.5 round body, ~25 mm nut OD |
| Lock style | Quick-lock bayonet / push-lock, 30-60° turn |
| Pins | 2-8 power, up to 22 mixed (model dependent) |
| Rated current | 35 A (4-pin) - 50 A (2/3-pin) |
| Rated voltage | 500 V AC / 600 V DC max (depends on pin count) |
| Withstand voltage | 1500-2500 V AC |
| Contact resistance | ≤ 5 mΩ |
| Insulation resistance | ≥ 500 MΩ @ 500 V DC |
| Protection | IP67 std / IP68 opt (mated) |
| Cable OD range | 6-16 mm (rear gland insert dependent) |
| Wire gauge | 0.5-6 mm² (20-10 AWG) screw type |
| Operating temp. | -40 °C … +85 / +105 °C |
| Shell material | PA66+GF, PPA, UL94-V0 |
| Mating cycles | ≥ 500 (plastic) / 3000 (premium e-bike grade) |
| Certifications | CE, RoHS, UL/CCC/TUV options per SKU |
- vs threaded M25 cable gland + terminal box: 80% faster install, no lid screws to seize, reusable, smaller profile
- vs M20 quick-lock: +10-15 A headroom, wider cable OD range, same lock speed
- vs Anderson / SB50 bare blade: fully sealed, polarized, keyed, clean appearance on outdoor gear
- vs pre-molded cordsets: cut any length on site, repair not replace, lower SKU count
- Outdoor LED & signage: street/tunnel lights, facade pixels, LED display power columns, landscape lighting trees
- New-energy & mobility: e-bike / scooter battery disconnect, lithium storage pack I/O, charging pile harness, AGV power drop
- Solar & off-grid: PV combiner aux feed, inverter DC bus tap, RV/camper power branch
- Industrial equipment: machine tool power entry, motor/encoder branch on conveyors, PLC cabinet exterior feed, drag-chain end power
- Marine / RV / agriculture: bilge pump feeds, tractor implement power, yacht deck lighting, irrigation valve manifolds
- Stage & event: temporary outdoor audio/lighting power trees, IP-rated speaker loop taps
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