Description
What current range does Legrand’s MCCB (DPX3) cover?
Legrand’s DPX3 MCCB range covers ratings from 16A up to 1600A, extendable to higher ratings with the DPX3 630/1600 series for main distribution board protection.
- DPX3 160 — up to 160A, for sub-distribution and smaller industrial feeders
- DPX3 250/400/630 — for larger sub-main and main distribution applications
- DPX3 1600 — for main incomers on large commercial and industrial installations
- Fixed and withdrawable versions; thermal-magnetic and electronic trip units
MCCB vs MCB — which does a project need?
An MCB (miniature circuit breaker) typically protects final circuits up to 63A in a distribution board; an MCCB protects higher-current circuits — usually 100A and above — on distribution panels, main incomers, and motor feeders.
If a BOQ item is protecting a whole floor, a generator connection, or a large motor rather than an individual socket or lighting circuit, it almost always calls for an MCCB rather than an MCB.
Frequently Asked Questions
Does Fembosco stock MCCBs with electronic trip units?
Yes — both standard thermal-magnetic and electronic trip unit versions are available, the latter used where adjustable protection curves or communication/monitoring is required.
Can Fembosco supply MCCBs already fitted into a panel or DB?
Yes — Fembosco’s panel-building service fits MCCBs into distribution panels or enclosures to your specification rather than supplying loose breakers only.
