Junction boxes.
Junction boxes protect cable branches in the on-board system against moisture and contact. This category includes the Spelsberg AZK 25, AZK 60 and AZK 100 junction boxes with protection class IP 65 and the HKL lever terminals from philippi, which let you extend and branch cables in boats, motorhomes and vehicles without tools.
Junction boxes and lever terminals for boats and vehicles
In short: Choose the junction box by conductor cross-section: the 5-pole terminal takes up to 2.5 mm² in the AZK 25, up to 6 mm² in the AZK 60 and up to 10 mm² in the AZK 100.
The range
| Model | Terminal | Cable entry | Dimensions |
|---|---|---|---|
| AZK 25 | 5-pole, 2.5 mm² | self-sealing membranes, cable Ø 2–16 mm | 80 x 80 x 52 mm |
| AZK 60 | 5-pole, 6 mm², raised | M20 or M25 cable glands | 110 x 110 x 67 mm |
| AZK 100 | 5-pole, 10 mm², raised | M20 or M25 cable glands | 140 x 140 x 79 mm |
- Junction boxes from Spelsberg: In the AZK 25, the cables pierce the self-sealing membranes, so no further sealing is needed. AZK 60 and AZK 100 offer more wiring space thanks to the raised terminal and require cable glands: M20x1.5 for cable Ø 3–10 mm, M25x1.5 for 10–18 mm.
- Lever terminals from philippi: HKL lever terminal with 2 to 5 poles, HKL 2-pole lever terminal and HKL 3-pole lever terminal with several outputs; colour-coded on both sides, electrically separated, up to 4 mm² without and 2.5 mm² with wire end ferrule.
Which connection technique belongs where is explained in the article Connecting cables.
Frequently asked questions. Answered briefly.
What is the difference between AZK 25, AZK 60 and AZK 100?
The Spelsberg junction boxes differ in size and terminal. The AZK 25 has a 5-pole terminal up to 2.5 mm² and self-sealing entry membranes for cables from 2 to 16 mm. The AZK 60 has a raised terminal up to 6 mm², the AZK 100 up to 10 mm². All of them have IP 65 protection.
Do I need cable glands for the junction boxes?
Not for the AZK 25: the cables pierce the self-sealing membranes, and no further sealing is required. For the AZK 60 and AZK 100, metric cable glands are needed for the cable entry, M20x1.5 for cables from 3 to 10 mm or M25x1.5 for cables from 10 to 18 mm. The mounting spouts have IP 54 protection.
When is a lever terminal enough instead of a junction box?
The HKL lever terminals connect and branch cables without tools, soldering or crimping. They accept conductors up to 4 mm² without or 2.5 mm² with a ferrule and can carry up to 20 A. For branches in damp places, the junction boxes with IP 65 protection are intended, in which the connection sits protected.