XRNM High-voltage Current-limiting Fuse (Busbar Type, Plug-in Type)

The XRNM high-voltage current-limiting fuse (busbar type, plug-in type) is suitable for 3.6-12kV indoor and outdoor systems with rated currents of 25-400A. It is used in conjunction with switches and vacuum circuit breakers as overload or short-circuit protection elements for high-voltage motors and other power equipment.

Product Details

XRNM High-voltage Current-limiting Fuse (Busbar Type, Plug-in Type)

XRNM High-voltage Current-limiting Fuse | Busbar Type Plug-in Type High-voltage Motor Protection

I. Application

This product is suitable for indoor and outdoor 50Hz systems with rated voltages of 3.6kV, 7.2kV, and 12kV. It can be used in conjunction with other protection devices (switches, vacuum circuit breakers, etc.) as overload or short-circuit protection elements for high-voltage motors and other power equipment. The XRNM high-voltage current-limiting fuse, with its excellent current-limiting characteristics, is widely used in high-voltage motor circuits and distribution systems.

II. Model

XRNM High-voltage Current-limiting Fuse Model Description Diagram

III. Technical Parameters and Dimension Drawings

XRNM High-voltage Current-limiting Fuse Technical Parameters Diagram

Model	Rated Voltage Un (kV)	Rated Current In (A)	Diameter × Length D×L (mm)	A (mm)	C (mm)	Rated Breaking Current (kA)	International Reference Model
XRNM1	3.6	50	φ51×254 Standard Size	337	305	63	WDFHO
		63
		80
		100
		125
		160	φ76×254 Standard Size				WKFHO
		200
		224
		250
		315
		355
		400
	7.2/12	25	φ76×403 Standard Size	486	454	63	WFNHO
		31.5
		40
		50
		63
		80
		100
		125
		160
		200					WKNHO
		224
		250	φ76×403 / φ88×403			50	WKNHO
		315
	12	25	φ76×600 Standard Size	682	650	63	WKNHO
		31.5
		40
		50
		63
		80
		100
		125
		160				50
		200
		224

IV. Technical Parameters and Dimension Drawings

XRNM High-voltage Current-limiting Fuse External Dimension Diagram

XRNM High-voltage Current-limiting Fuse Installation Dimension Diagram

Model	Rated Voltage (kV)	Main Dimensions (mm)
Model	Rated Voltage (kV)	A	B	C
XRNM	3.6	390	312	340
XRNM	7.2	500	461	150

Ensure that for the XRNM high-voltage current-limiting fuse, the XRNM high-voltage current-limiting fuse is suitable for motor circuit protection, with two installation methods: busbar type and plug-in type. During installation, verify the rated current and select a fuse link at 1.5 times the motor rated current. Ensure uniform spring contact pressure for the plug-in type contacts, and proper torque for bolted connections of the busbar type.

XRNM High-voltage Current-limiting Fuse | Busbar Type Plug-in Type High-voltage Motor Protection

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