Distribution PanelsSDB400 AWall or floor
Sub Distribution Board
The last board before the load — lighting, small power and machine supplies, on MCBs and RCBOs.
Rating plate
Sub Distribution Board
- Compliance
- IS/IEC 61439-1 & 61439-2
- Supply system
- 415 V, 3 phase 4 wire, 50 Hz
- Rated insulation voltage
- 690 V
- Ambient temperature
- 45 °C
- Rated current
- 63 A to 400 A
- Incomer
- MCB, MCCB or isolator
- Outgoing ways
- MCB / RCBO, 4 to 36
- Earth leakage
- 30 mA RCBO on socket and portable-equipment circuits
- Mounting
- Wall, recessed or floor standing
- Degree of protection
- IP42 to IP54 (IP65 outdoor)
Specifying this panel
Use RCBOs rather than a single RCCB on the board incomer. One nuisance trip on a shared RCCB drops every circuit; an RCBO drops only the faulty one.
Label the ways to the actual room or machine, not the circuit number. The label is read by someone who needs the supply off now, not by the person who drew the schedule.
Built for
- Lighting and small power on a floor
- Machine and workshop supplies
- Kitchens, plant rooms and utility areas
- Outdoor and wash-down locations
Fitted with
The assembly is ours; the switchgear inside it is genuine, authorised-channel product from the makes you specify.
Distribution Panels
Other panels in this family.
Built to the same standard, and able to share a lineup with this one.
MDB · 2000 A · Floor standing
Main Distribution Board
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UMDB · Bypass · Clean bus
UPS Main Distribution Board
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USDB · Final · Per-rack
UPS Sub Distribution Board
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Next step
Send us the single-line.
A drawing, a load list or a BOQ is enough to start. You'll get the ratings checked against the actual fault level, a general-arrangement drawing to approve, and a fixed price.