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0102030405

HH15 (QSA) Series Isolation Switch Fuse - High Performance Electrical Solutions by China Suppliers and Factory

The HH15(QSA) series is a versatile product line designed for AC 50Hz applications, with a rated voltage of up to AC690V and an approved heating current capacity of up to 1600A. These devices are ideal for distribution circuits and motor circuits that experience high short-circuit currents. Serving as a manual or infrequently operated main switch, they are particularly well-suited for installation in advanced drawer-type low-voltage complete sets, Additionally, the double throw switch allows for the infrequent connection and disconnection of dual electrical circuits, ensuring operational efficiency. Compliant with both GB/T14048.3 and IEC60947-3 standards, our products meet the highest safety and performance benchmarks, As a leading manufacturer in China, we take pride in being a top supplier and factory of high-quality electrical equipment, including current classes such as 63A, 125A, 160A, 250A, 400A, 630A, 800A, 1000A, 1250A, and 1600A. Trust our expertise and choose our HH15(QSA) series for reliable and efficient electrical solutions

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Product Detail

🔖 Product Model Meaning

⚙️ Normal Working and Installation Conditions

The ambient air temperature shall not be higher than +40℃ and not lower than -5℃.
The elevation of the installation site shall not exceed 2000m.
Humidity: When the maximum temperature is +40℃, the relative humidity of the air does not exceed 50%. Higher relative humidity can be allowed at lower temperatures, such as reaching 90% at 20℃. Special measures should be taken for occasional condensation caused by temperature changes.
The pollution level of the surrounding environment is Level 3.
The switch should be installed in a place without significant shaking, shock vibration, and invasion of rain and snow. The installation location should be free of explosive hazardous media, and there should be no gas and dust in the media that can corrode metal and damage insulation.

🏗️ Structure Characteristics

The switch adopts a fully enclosed structure to ensure stable operation reliability and performance improvement; featuring a unique rolling insertion contact system. Each phase has two sets of contact systems with this dual break point. The current is passed through several rollers separately, resulting in a significant reduction in the electric reaction force on each roller. During the movement, the contact between the roller and the static contact has both rolling and sliding friction. This can effectively avoid welding. The operating mechanism has energy storage springs, so the movement speed of the moving contact group is independent of the magnitude of the operating force and the operating speed.

The actuator consists of a panel mounted handle and the driving coupling, extension shaft, shaft coupling, and driving shaft are composed of a handle meshing driving coupling. The operating handle is installed on the switchgear door. When the cabinet door is closed, the handle fits with the operating rod of the switch. When the switch is in the closed position, the handle is interlocked with the cabinet door to prevent it from opening.

The depth of installation of switches in a complete set of cabinets can be considered according to the needs of the combination installation of various electrical components. The extension shaft and shaft coupling are only used when the drive shaft is not long enough, and have a considerable range of movement.

📊 Main Technical Specifications

The matching relationship between switches and fuses

Agreed Heating Current I_th	Matching Fuse Size	Rated Current of Fuse (A)
63	NT00	4、6、10、16、20、25、32、40、50、63
125	NT00	10、16、25、32、40、50、63、80、100、125
160	NT00	10、16、25、32、40、50、63、80、100、125、160
250	NT1	63、80、100、125、160、200、250
400	NT2	160、200、250、315、400
630	NT3	250、315、400、500、630
800	CRT3	800
1000	NT4	800、1000
1250	NT4	800、1000、1250
1600	RT20-4	1600

Main technical parameters of switches

Model and Specification			HH15 (QSA)-63	HH15 (QSA)-125	HH15 (QSA)-160	HH15 (QSA)-250	HH15 (QSA)-400	HH15 (QSA)-630	HH15 (QSA)-800	HH15 (QSA)-1000	HH15 (QSA)-1250	HH15 (QSA)-1600
Agreed heating current (A)			63	125	160	250	400	630	800	1000	1250	1600
Rated insulation voltage (V)			1000	1000	1000	1000	1000	1000	1000	1000	1000	1000
Rated impulse withstand voltage (kV)			8	8	12	12	12	12	12	12	12	12
Rated working current (A)	400V		63	125	160	250	400	630	800	1000	1250	1600
Rated working current (A)	690V		63	100	160	250	315	500	630	800	1000	1250
Rated making and breaking energy Force (A) (at 1.05Ue)	AC690V, AC-23B COSФ:0.35	Current connection	630	1250	1600	2500	4000	6300	8000	10000	12500	16000
Rated making and breaking energy Force (A) (at 1.05Ue)	AC690V, AC-23B COSФ:0.35	Off	504	1000	1280	2000	3200	5040	6400	8000	10000	12800
Mechanical lifespan (times)			1400	1400	800	800	800	800	500	500	500	500
Electrical lifespan (times)			200	200	200	200	200	200	100	100	100	100
Operating torque (Nm)			7.5	7.5	16	16	16	30	40	40	40	50
Rated limiting short-circuit current (kA)			50	50	50	50	50	50	100	100	100	100
Utilization category			AC-23B	AC-23B	AC-23B	AC-23B	AC-23B	AC-23B	AC-23B	AC-23B	AC-23B	AC-23B
Pollution degree			3	3	3	3	3	3	3	3	3	3
Installation category			III	III	III	III	III	III	III	III	III	III

⚠️ Installation Precautions

1. The contact parameters of the switch have been set by the manufacturer and cannot be adjusted freely during use.

2. During the connection process between the busbar and the product, it is necessary to ensure that the distance between the busbar holes is consistent with the product wiring holes to avoid product damage caused by external forces.

🛒 Ordering Notice

The customer must specify the product model, agreed heating current, number of poles, whether there is a fuse, whether there is an auxiliary contact switch, and the number of switches when ordering the switch.

Ordering example: HH15(QSA)-630/32, equipped with 500A melt, quantity 20 units.

Note: The specifications and external dimensions may change due to product improvements without prior notice, and the actual product shall prevail.

❓ Frequently Asked Questions

Q What is the maximum ambient temperature allowed for the HH15(QSA) switch during normal operation?

The ambient air temperature must not exceed +40℃ and must not fall below -5℃ during normal operation. If higher humidity conditions are present at lower temperatures (e.g., 90% relative humidity at 20℃), special measures should be taken to prevent condensation.

Q What makes the HH15(QSA) switch's contact system unique?

The HH15(QSA) features a unique rolling insertion contact system with dual break points per phase. Current passes through multiple rollers, significantly reducing electric reaction force on each roller. The combined rolling and sliding friction between the roller and static contact effectively prevents welding, ensuring reliable long-term performance.

Q What fuse sizes are compatible with the HH15(QSA)-630 switch?

The HH15(QSA)-630 switch is compatible with NT3 fuses rated at 250A, 315A, 400A, 500A, and 630A. Always refer to the matching table provided to ensure the correct fuse selection for your application.

Q What information is required when placing an order for the HH15(QSA) switch?

When ordering, customers must specify: the product model, agreed heating current, number of poles, whether a fuse is required, whether an auxiliary contact switch is needed, and the total quantity. For example: HH15(QSA)-630/32, equipped with 500A melt, quantity 20 units.

Q Can the contact parameters of the HH15(QSA) switch be adjusted on-site?

No. The contact parameters have been precisely set by the manufacturer and must not be adjusted freely during use. Any unauthorized adjustment may compromise the safety and performance of the switch. Please consult the manufacturer if adjustments are needed.

Q What is the rated limiting short-circuit current for the HH15(QSA)-1000 model?

The HH15(QSA)-1000 has a rated limiting short-circuit current of 100kA. Models with an agreed heating current of 63A to 630A are rated at 50kA, while models from 800A to 1600A are rated at 100kA.