KB technical datas:
1. Material:Bakelite , KBWeight 145g
2. Protection Tube Entry: PF1/2'', other entries on request
3. Extension Wire Entry: PF1/2'' other entries on request
4. Material of terminal block: Bakelite, ceramics
5. Form of terminal block: 2/3/4/6P-C or 2/3/4/6P-B