Standards for Construction of SMDB, MDB, FDB. The LV switchboards and distribution boards should be constructed in accordance with the latest revision of the following standards: BS EN 61439-1:2009: Low-voltage switchgear and controlgear assemblies. General rules; BS EN 61439-2:2009: Low-voltage switchgear and controlgear assemblies.

FDB 10–150 ED, HFD, FDC, HFDDC 15–225 FD 15–225 ... N.I.T. is non-interchangeable trip unit. T/M is thermal-magnetic. For DC applications, magnetics are approximately 40% higher. b Two-pole circuit breaker, or two poles of three-pole circuit breaker.

FDB11 Current Rating 10-30 amps A popular range of general purpose single phase, earth leakage protection units manufactured by FDB Electrical

Protective devices available from FDB include fully adjustable multi-function RCD’s, variable earth leakage relays, percentage earth fault relays together with a range of external toroidal CT’s up to 240mm diameter. Custom built panels and bespoke solutions are designed and manufactured in-house to suit virtually any industrial application ...

A range of heavy duty electrical protection units designed to overcome inherent earth leakage or inrush currents. The unit combines a variable sensitivity and time delay RCD together with a triple pole MCCB (minimum I SKA) to provide overcurrent and short circuit protection. • Voltage: 380/440V SOHz TP + N • Ratings: As Below

FDB supply industrial locks, hinges, handles, seals and stays together with electrical protection devices including RCDs and earth continuity monitors.

Whether you are looking for a DC immune device for a rail related installation or an IP 66 three phase unit, a company such as FDB Electrical can custom build to meet specific needs – for land based, shore line, ship installation, hangers, workshops, industrial units, and institutions.

A range of heavy duty protection units comprising a choice of high, medium or low sensitivity RCD’s together with a triple pole MCCB (minimum I SKA) to provide overcurrent and short circuit protection. Various levels of residual operating current …

2021年3月15日 · The new ROF type FDB units are comprised of four parts. In conventional FDB units the bearing portion and casing were an integrated component called a "sleeve."

Identify Proper Location for the SPD. Locate the unit as close as physically possible to the panel being protected so as to minimize lead lengths (improves performance) and the need for sharp bends in the wires. There is no minimum wire length requirement. Mount top and bottom flanges securely. Connect Proper Ground.