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Schneider Electric 50A Rail Mount Fuse Holder for 14 mm x 51 mm, 3P-Pole, 690V ac

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RS-stocknr.:
482-875
Fabrikantnummer:
DF143NC
Fabrikant:
Schneider Electric
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Merk

Schneider Electric

Product Type

Rail Mount Fuse Holder

Range

TeSys DF

Current Rating

50A

Voltage

690V ac

Number of Poles

3

Rail Type

DIN 35 mm

Indicator

Yes

Minimum Operating Temperature

-20°C

Compatible Fuse Size

14 mm x 51 mm

Maximum Operating Temperature

+60°C

Standards/Approvals

IEC 60947-3, CSA, RoHS, UL512

Better World Product

Yes

Terminal Type

Screw Clamp

Series

DF

Land van herkomst:
TN

Schneider Electric Series DF Rail Mount Fuse Holder, 50A Current, 690V Voltage - DF143NC


This rail-mount fuseholder is designed to carry 14x51mm tubular fuses and to be installed on a 35mm DIN rail in industrial control and power distribution panels. It provides a compact, rail-mounted solution for three-phase Plus NEUTRAL arrangements at voltages up to 690V and is intended for use where clear fuse indication and straightforward switching are required.

Features & Benefits


• 50A rated operational current for high-load circuit protection
• Indicator fitted to show fuse status at a glance
• Screw-clamp terminals supporting up to 25mm² for secure connections
• Withstands 8 kV impulse voltage for transient resilience
• Short-circuit withstand up to 120 kA at 400V for fault survival
• Operates to +60 °C enabling high-temperature installations

Applications


• Suitable for motor control panels requiring 3-phase protection
• Ideal for distribution boards in manufacturing plants
• Used with aM or gG 14x51mm fuse cartridges in switchgear
• Can be used for power-supply isolation in automation racks
• Suitable for retrofitting existing 35mm DIN-rail systems

Which Terminal conductor types can be accommodated?


The unit accepts both rigid and flexible conductors

single conductors up to 25mm² on one Terminal and up to 10mm² on the other set of Terminals, with connections tightened to 3.5 N·m.

How does it cope with elevated ambient temperatures?


It is specified for operation between −20 °C and +60 °C with derating applied above 20 °C to maintain performance.

What mechanical mounting orientation is allowed?


It is designed for vertical mounting with a tolerance of ±23° on a symmetrical 35mm DIN rail.

What standards and certification apply to its electrical safety?


It conforms to EN/IEC 60947-3 and EN/IEC 60269-2 and carries recognition under UL and CSA schemes.

Standards

IEC 60947-3, UL 512, CSA 22-2 n° 39

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