HR17 Fuse Switch Disconnector Manufacturer

HR17 Fuse switch disconnector

HR17 series fusible isolation switch is a new product developed by our company. Its rated insulation voltage is 800V, rated working voltage to 690V,

rated working current to 630A, rated frequency is 50Hz, suitable for distribution circuit and motor circuit with high short circuit current, used as a

power switch, isolation switch and emergency switch, and for circuit protection, but generally not as a direct opening and closing of a single motor.

Appurtenance:

Description

Product representative image

Scope of Application

HR17 series fusible isolation switch is a new product developed by our company. Its rated insulation voltage is 800V, rated working voltage to 690V,

rated working current to 630A, rated frequency is 50Hz, suitable for distribution circuit and motor circuit with high short circuit current, used as a

power switch, isolation switch and emergency switch, and for circuit protection, but generally not as a direct opening and closing of a single motor.

Standards: GB14048.3, IEC 60947-3.

Application Scenarios

The HR17 Series Fuse Switch Disconnector is designed for low-voltage power distribution systems and combines the functions of circuit isolation, load switching and short-circuit protection through fuse links. It is widely used in industrial, commercial and infrastructure electrical installations where reliable isolation and protection are required.

Industrial Power Distribution

Widely used in manufacturing plants, workshops, machinery systems and industrial control panels as a main switch or branch circuit protection device. It provides safe isolation during equipment maintenance and protects circuits against overload and short-circuit faults when used with appropriate fuse links.

Commercial Buildings

Suitable for shopping malls, office buildings, hotels, hospitals and commercial complexes, ensuring reliable power distribution and safe disconnection of electrical circuits.

Motor Control and Distribution Cabinets

Commonly installed in motor control centers (MCC), switchboards and distribution cabinets as an incoming or outgoing feeder switch, providing visible isolation and dependable protection.

Renewable Energy Systems

Used in photovoltaic combiner boxes, energy storage systems and other renewable energy installations where circuit isolation and overcurrent protection are required.

Utility and Infrastructure Projects

Applicable to power substations, telecommunications facilities, water treatment plants, transportation systems and municipal projects requiring dependable switching and isolation functions.

Marine and Special Applications

Its compact structure, reliable contact system and high operational safety make it suitable for shipbuilding, offshore platforms and other demanding electrical environments.

Normal working conditions

The ambient air temperature is not higher than +40℃, not lower than -5℃;

The elevation of the installation site shall not exceed 2000m;

When the maximum temperature is +40℃, the relative humidity of the air does not exceed 50%, and a higher relative humidity can be allowed

at a lower temperature. Special measures should be taken for condensation occasionally caused by temperature changes;

The pollution level of the surrounding environment is level 3;

The switch should be installed in a place where there is no significant shaking, shock vibration and no rain or snow attack. At the same time, the

installation site should be free from explosive dangerous media, and the media should be free of gas and dust enough to corrode metal and

destroy insulation.

Structural features

The HR17 Series Fuse Switch Disconnector adopts a modular and compact design, integrating a switch mechanism and fuse protection into a single unit. It provides reliable switching performance, visible isolation and high short-circuit protection capability.

Integrated Fuse Protection

The switch is designed to accommodate NH/NT type fuse links, allowing the fuse to provide effective short-circuit protection while the switch mechanism ensures safe operation and isolation.

Visible Isolation Gap

When the switch is opened, a clear visible isolation distance is created, allowing maintenance personnel to verify the disconnected state and improving operational safety.

High Mechanical Strength

The housing and operating mechanism are manufactured from high-quality insulating and flame-retardant materials, providing excellent mechanical durability and electrical insulation performance.

Reliable Contact System

Silver-alloy contacts and optimized contact pressure ensure low contact resistance, reduced temperature rise and stable current-carrying performance.

Fast Switching Mechanism

The quick-make and quick-break operating mechanism enables rapid switching action, reducing arcing time and improving electrical endurance.

Modular Installation Design

The product supports panel mounting and cabinet installation, making it suitable for various low-voltage switchgear and distribution equipment configurations.

Safe and Convenient Operation

The handle mechanism is designed for easy manual operation and can be equipped with padlocking devices to prevent unauthorized operation during maintenance.

Excellent Arc Suppression Performance

The optimized contact structure and fuse coordination effectively limit fault currents and reduce damage to downstream equipment.

Product Model and Its Meaning
HR17 Fuse switch disconnector

Technical Parameters

Conventional eating urent(A)		63(32)	160(100)	250	400	630
Rated insulation votage(V)		800
Rated working curent (A)	400V AC21	32、63	100、160	250	400	630
	400V AC22	32、63	100、160	250	400	630
	400V AC23	一	100、160	250	400	630
	690V AC21	一	100、160	250	400	630
	690V AC22	一	100	160	315	425
Operating force N		≤120	≤250	≤350	≤350	≤450
Fuse	Model	RT19-125	NT00、RT16-00	NT1、RT16-1	NT2、RT16-2	NT3、RT16-3
	Melt at 400V Rated curentA （Rated imited short icuit curent)	20 32 63	20、25、32、35、40、50、63、80、100、125、160 (≥100kA)	80、100、125、160、200、224、250 (≥100kA)	125、160、200、224、250、300、315、355、400 (≥100kA)	315、355、400、425、500、630 (≥100kA)
	Melt at 690V Rated curent A (Rated limited short icuit curent)	—	20、25、32、35、40、50、63、80、100 ≥50kA	80、100、125、160、200 ≥50kA	125、160、200、224、250、300、315 ≥50kA	315、355、400、425 ≥50kA

External appearance and installation dimensions
HR17 Fuse switch disconnector

HR17 series (fixed)switch mounting dimensions

On-off type		Overall imension(mm)					Mounting size(mm)			Terminal size
On-off type		A	B	C	D	E	a	b	φC		M
HR17B-40	2/	55	116	76	150	21	25		φ6	/	/
HR17B-40	3/	76	116	76	150	21	42	/	φ6	/	/
HR17B-63	2/	74	116	76	150	31	35	/	φ6	/	/
HR17B-63	3/	105	116	76	150	31	62	/	φ6	/	/
HR17B-160	2/	75	200	83	205	33	43	25	φ7	2×20	M8
	3/	106	200	83	205	33	66	25	φ7
	4/	138	200	83	205	33	100	25	φ7
HR17B-250	2/	128	247	110	295	57	72	50	φ11	2×30	M10
	3/	185	247	110	295	57	114	50	φ11
	4/	242	247	110	295	57	172	50	φ11
HR17B-400	2/	145	290	125	340	65	80	50	φ11	2.5×33	M10
	3/	210	290	125	340	65	130	50	φ11
	4/	276	290	125	340	65	195	50	φ11
HR17B-630	2/	175	300	145	360	81	90	50	φ11	3.5×40	M12
	3/	256	300	145	360	81	162	50	φ11
	4/	340	300	145	360	81	243	50	φ11

HR17 Series (Mount)switch mounting dimensions

On-offtpe	A	B	C	D	E	F	H
HR17B-160/30J	106	200	97	60	33	87	200
HR17B-250/30J	185	247	128	88	57	110	220
HR17B-400/30J	210	290	145	97	65	125	268
HR17B-630/30J	256	300	160	112	81	139	285

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