MERSEN FUSE MV3 630A/185mm 3P3 1.350.085 1.350.085

Robust NH fuse-switch disconnector engineered for high-performance and safety in demanding industrial environments, offering reliable operation at 630A within a 1×3-pole configuration.

SKU: K1023256Alt SKU: 1.350.085MPN: K1023256

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Why Choose the Mersen K1023256 MULTIVERT® NH Fuse Switch Disconnector?

The Mersen K1023256 is a MULTIVERT® NH Size 2 vertical fuse switch disconnector designed for industrial low-voltage power distribution systems. Rated at 400 A and 690 V AC, it is intended for installation on 185 mm busbar systems, providing reliable switching, visible isolation and NH fuse protection in a compact modular assembly.

Manufactured in accordance with IEC/EN 60947-3, the unit is suitable for use with NH Size 2 fuse links manufactured to IEC/EN 60269-2 and VDE 0636-2. The MULTIVERT® platform offers fast installation, high operator safety and straightforward maintenance for demanding industrial applications.

The K1023256 forms part of Mersen's proven MULTIVERT® range, offering dependable performance for switchboards, feeder pillars, transformer substations and OEM electrical equipment.

Key Advantages

400 A continuous current rating.
690 V AC operational voltage.
Designed for 185 mm busbar systems.
Suitable for NH Size 2 fuse links.
Compact vertical design saves switchboard space.
Safe load switching and visible isolation.
High short-circuit withstand capability.
Modular construction simplifies installation and servicing.
Suitable for demanding industrial power distribution.

Key Features

Manufacturer: Mersen
Item number: K1023256
Series: MULTIVERT® 400A
Product type: NH vertical fuse switch disconnector
Fuse size: NH Size 2
Rated current: 400 A
Rated voltage: 690 V AC
Busbar spacing: 185 mm
Frequency: 50–60 Hz
Designed for industrial low-voltage distribution systems.

Reliable Protection for Industrial Installations

The Mersen K1023256 combines switching, isolation and fuse protection in a single compact unit. Designed for modern power distribution systems, it enables straightforward installation on 185 mm busbar assemblies while providing dependable protection against overloads and short-circuit faults.

Its modular MULTIVERT® design allows easy maintenance and compatibility with a wide range of Mersen accessories, making it suitable for both new installations and retrofit projects.

Typical Applications

Industrial switchboards.
Power distribution panels.
Transformer substations.
Cable distribution cabinets.
Feeder pillars.
OEM electrical equipment.
Commercial and industrial low-voltage distribution.

Technical Specifications

Current	630 A
Phase	Three Phase
Item number	K1023256
Catalogue No	1.350.085
Description	NH fuse-switch disconnector MULTIVERT® Size 3 630A 1x3-Pole switching Bus bar system 185mm Screw M12 ct1P
EAN/UPC Code	9008567000311
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	630 A
Utilization Category	AC 23 B @ Ue = AC 400 V; Ie = 630 A AC 22 B @ Ue = AC 500 V; Ie = 630 A AC 21 B @ Ue = AC 690 V; Ie = 630 A
Switchability	1x3-pole switching
RoHS Compliant	Yes
AC or DC	AC
Short Circuit Current Rating (SCCR)	80kA@Ue = AC 400 V; Ie = 630 A / 80kA@Ue = AC 500 V; Ie = 630 A / 80kA@Ue = AC 690 V; Ie = 500 A
Fuse Size	3
Design Details	MULTIVERT® 1.350.000 with integrated C.T. 600/5A, 5,00 VA, class 1 for single pole measurement (ready fitted in pole 1)
Number of Poles	3-Pole
Degree of Pollution	3
Rated Impulse Withstand Voltage	12 kV
Rated Insulation Voltage	1000 V
Rated SC Withstand	12.6 kA / 1 s
Max Power dissipation of Fuse Links Pn	48 W
Max Power dissipation of Solid Links Pn	17.5 W
Power Dissipation by Ith without Fuse-Links	95 W
Rated short circuit making capacity with solid links Icm	16 kA
Installation Mounting	Bus bar system 185 mm
Product Width	98 mm
Product Length	190 mm
Product Height	685 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	5.8 kg
Sell Pack Width	100 mm
Sell Pack Length	688 mm
Sell Pack Height	195 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	630 A
Product Weight	5.8 kg
Conventional Free Air thermal Current - Solid Links	800 A
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V

Frequently Asked Questions

What is the Mersen K1023256?

The K1023256 is a MULTIVERT® NH Size 2 vertical fuse switch disconnector for industrial low-voltage power distribution.

Which fuse links are compatible?

The unit is designed for NH Size 2 fuse links manufactured to IEC/EN 60269-2.

What current is it rated for?

The K1023256 has a rated operational current of 400 A.

What busbar system is required?

It is designed for installation on a 185 mm busbar system.

What standards does it comply with?

The fuse switch disconnector is designed in accordance with IEC/EN 60947-3 and supports NH fuse links manufactured to IEC/EN 60269-2.

Trusted by Electrical Professionals Worldwide

Mersen MULTIVERT® fuse switch disconnectors are trusted by utilities, OEM manufacturers and panel builders for dependable switching, isolation and circuit protection in demanding low-voltage electrical installations.

Current	630 A
Phase	Three Phase
Item number	K1023256
Catalogue No	1.350.085
Description	NH fuse-switch disconnector MULTIVERT® Size 3 630A 1x3-Pole switching Bus bar system 185mm Screw M12 ct1P
EAN/UPC Code	9008567000311
Frequency (Hz)	50 ... 60 Hz
Rated voltage AC IEC	690 V
Ampere Rating	630 A
Utilization Category	AC 23 B @ Ue = AC 400 V; Ie = 630 A AC 22 B @ Ue = AC 500 V; Ie = 630 A AC 21 B @ Ue = AC 690 V; Ie = 630 A
Switchability	1x3-pole switching
RoHS Compliant	Yes
AC or DC	AC
Short Circuit Current Rating (SCCR)	80kA@Ue = AC 400 V; Ie = 630 A / 80kA@Ue = AC 500 V; Ie = 630 A / 80kA@Ue = AC 690 V; Ie = 500 A
Fuse Size	3
Design Details	MULTIVERT® 1.350.000 with integrated C.T. 600/5A, 5,00 VA, class 1 for single pole measurement (ready fitted in pole 1)
Number of Poles	3-Pole
Degree of Pollution	3
Rated Impulse Withstand Voltage	12 kV
Rated Insulation Voltage	1000 V
Rated SC Withstand	12.6 kA / 1 s
Max Power dissipation of Fuse Links Pn	48 W
Max Power dissipation of Solid Links Pn	17.5 W
Power Dissipation by Ith without Fuse-Links	95 W
Rated short circuit making capacity with solid links Icm	16 kA
Installation Mounting	Bus bar system 185 mm
Product Width	98 mm
Product Length	190 mm
Product Height	685 mm
Sell Pack Quantity	1 EA
Sell Pack Weight	5.8 kg
Sell Pack Width	100 mm
Sell Pack Length	688 mm
Sell Pack Height	195 mm
Product group	IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith	630 A
Product Weight	5.8 kg
Conventional Free Air thermal Current - Solid Links	800 A
Poles	3-pole
Device Type	Fuse switch disconnector
Voltage	690 V

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