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- SB1 Control and Signalling ∅ 22 mm(fixing)
- SB2-E Plastic Control and Signalling ∅ 22mm(fixing)
- SB2-B Metal Control and Signalling ∅ 22mm(fixing)
- SAL-B Control stations and enclosures
- SB3 Control and Signalling ∅ 25、30mm(fixing)
- SB4 Metal Control and Signalling ∅ 22mm
- SB5 Plastic Control and Signalling ∅ 22mm
- SAL-D, K Control stations and enclosures
- SB6 Plastic Control and Signalling ∅ 16mm(fixing)
- SB8 Control and Signalling ∅ 22mm(fixing)
- SB9 Control and Signalling ∅ 22mm(fixing)
- SB10 Control and Signalling ∅ 22mm(fixing)
- AD58 signal indicator series φ16、22、25、30mm(fixing)
- BA9s series bulb with integral LED
- AD58 & SM buzzer units
- SM buzzer series
- Limit Switch
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- MG03 Series
- Water-proof Connection Box
- 6 Ways Distribution Boxes A06 Series
- 6 Ways Distribution Boxes B06 Series
- 10 Ways Distribution Boxes A10 Series
- 11 Ways Distribution Boxes B11 Series
- 14 Ways Distribution Boxes B14 Series
- 12 Ways Distribution Boxes A12 Series
- 24 Ways Distribution Boxes A24 Series
- Control stations and enclosure
- Plug & Socket
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These bases can be used for type 2-es changeable version arresters and having 1 pc NO operation signal contact.
| Howo code | Number of poles | W (mm) | Color |
| WZU4-BASE-1P | 1P | 18 | grey |
| WZU4-BASE-2P | 2P | 36 | grey |
| WZU4-BASE-3P | 3P | 54 | grey |
| WZU4-BASE-4P | 4P | 72 | grey |
These inserts can be used for type 2-es changeable version arresters. The inserts can be changed easily and an optical sign informs the user about the operation mode.
| Howo code | Type | In | Imax |
W (mm) |
Color |
| WZU4-40-M | Type 2 | 20 kA | 40 kA | 18 | grey |
| WZU4-30-M | Type 2 | 15 kA | 30 kA | 18 | grey |
| WZU4-20-M | Type 2 | 10 kA | 20 kA | 18 | grey |
| WZU4-40-NPE-M | Type 2 | 20 kA | 40 kA | 18 | grey |