HH15 Series Switch-Disconnector-Fuse Units and Switch-Disconnectors

Product Overview

The HH15 series switch-disconnector-fuse units and switch-disconnectors (hereinafter referred to as “switches”) include the QSA series, QA series and QP series. They are mainly suitable for distribution circuits and motor circuits with high short-circuit currents, serving as manually operated main switches or master switches for infrequent operation. The QSA series switches can also be used for circuit short-circuit protection.

The switches comply with GB/T 14048.3 and IEC 60947-3 standards and are widely used in higher-pole drawer-type low-voltage complete sets of equipment.

Structural Features

• The switch adopts a front rotary operating mode and consists of an operating mechanism, contact system, handle, etc.
• The switch adopts a fully enclosed structure with spring energy-storage operation. The making and breaking speed of the switch is independent of the operator’s action speed, thereby ensuring the safety of personnel and equipment.
• The switch features a unique contact system. The moving contact system is directly formed by stacked copper sheets. The moving contact blades adopt a bridge-type structure with automatic adjustment function, ensuring effective line contact with the fixed contacts and thereby guaranteeing the stability of the product’ s temperature rise.
• The operating handle can be installed on the switchgear door. When the door is closed, the handle engages with the operating shaft of the switch. When the switch is in the closed position, the handle interlocks with the door to prevent the door from being opened.
• The switch is also equipped with an extension shaft; special lengths can be customized separately.

Normal Service and Installation Conditions

• Ambient air temperature not higher than +40 °C and not lower than -5 °C; the average temperature over a 24-hour period shall not exceed +35°C.
• Installation altitude not exceeding 2000 m.
• At an ambient air temperature of +40 °C, the relative humidity shall not exceed 50%. Higher relative humidity is permitted at lower temperatures (e.g., 90% at 20 °C). Special measures shall be taken against occasional condensation caused by temperature variations.
• Pollution degree of the surrounding environment is degree 3.
• The switch shall be installed in a location free from significant vibration, shock vibration and rain/snow exposure. The installation site shall be free from explosive media, and the medium shall contain no gases or dust sufficient to corrode metal or damage insulation.

Main Technical Parameters

HH15(QSA)-□/□□

Model	Model	QSA-125	QSA-160	QSA-250	QSA-400	QSA-630	QSA-800	QSA-1250
Number of main poles	Number of main poles	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4
Rated insulation voltage Ui	V	690	690	690	690	690	1000	1000
Rated impulse withstand voltage Uimp	kV	8	8	8	8	8	12	12
Rated operational voltage Ue	V	AC 400	AC 400	AC 400	AC 400	AC 400	AC 400	AC400
Conventional free-air thermal current	A	125	160	250	400	630	800	1250
Rated operational current 400V:AC-22B	A	125	160	250	400	630	800	1250
Rated conditional short-circuit current at 400V	kA	50	50	50	50	50	50	100
Mechanical endurance (operations)	operations	10000	10000	10000	10000	3000	3000	500
Electrical endurance	operations	500	300	300	300	200	200	100
Fuse rated current at 400 V	A	125	160	250	400	630	800	1250、1000、800
Fuse size		0	0	1	2	3	3	4
Operating torque	Nm	7.5	16	16	16	30	30	38
Auxiliary contact conventional free-air thermal current Ith, 400 V, AC-15A	A	4	4	4	4	4	4	4

HH15(QA)-□/□□

Model	Model	HH15-125	HH15-160	HH15-250	HH15-400	HH15-630	HH15-1000	HH15-1250	HH15-1600
Number of main poles	Number of main poles	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4
Rated insulation voltage Ui	V	690	690	690	690	690	1000	1000	1000
Rated impulse withstand voltage Uimp	kV	8	8	8	8	8	12	12	12
Rated operational voltage Ue	V	AC 380	AC 380	AC 380	AC 380	AC 380	AC 380	AC 380	AC 380
Conventional free-air thermal current	A	125	160	250	400	630	1000	1250	1250
Rated operational current 380 V AC-21B	A	125	160	250	400	630	1000	1250	1250
Rated short-time withstand current Icw	kA/1s	5	5	5	12.6	12.6	50	50	50
Mechanical endurance	operations	10000	10000	10000	10000	10000	3000	500	500
Electrical endurance	operations	500	500	300	300	300	200	100	100
Operating torque	Nm	7.5	7.5	16	16	16	30	38	38
Auxiliary contact conventional free-air thermal current Ith 400 V, AC-15A	A	4	4	4	4	4	4	4	4

HH15(QP)-□/□□

Model	Model	HH15-250	HH15-400	HH15-630	HH15-1000	HH15-1250	HH15-1600	HH15-2500
Number of main poles	Number of main poles	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4	3、3N、4
Rated insulation voltage Ui	V	690	690	690	1000	1000	1000	1000
Rated impulse withstand voltage Uimp	kV	8	8	8	12	12	12	12
Rated operational voltage Ue	V	AC 380	AC 380	AC 380	AC 380	AC 380	AC 380	AC 380
Conventional free-air thermal current	A	250	400	630	1000	1250	1600	2500
Rated operational current 380 V AC-21B	A	250	400	630	1000	1250	1600	2500
Rated short-time withstand current Icw	kA/1s	5	12.6	12.6	50	50	50	50
Mechanical endurance	operations	10000	10000	10000	10000	3000	3000	500
Electrical endurance	operations	500	300	300	300	200	200	100
Operating torque	Nm	7.5	16	16	16	30	30	38
Auxiliary contact conventional free-air thermal current Ith 400 V, AC-15A	A	4	4	4	4	4	4	4

HH15(QSA)-125/3

HH15(QSA)-125/3N HH15(QSA)-125/4

HH15(QSA)-160/3

HH15(QSA)-250/3

HH15(QSA)-400/3

HH15(QSA)-400/3N HH15(QSA)-400/4

HH15(QSA)-630/3

HH15(QSA)-630/3N HH15(QSA)-630/4

HH15(QSA)-800/3

HH15(QSA)-800/3N HH15(QSA)-800/4

HH15(QSA)-1250/3

HH15(QA)-125/3

HH15(QA)-160/3 HH15(QA)-200/3

HH15(QA)-400/3

HH15(QA)-630/3

HH15(QA)-1000/3

HH15(QA)-1250/3 HH15(QA)-1600/3

Dimension	QA-1250	QA-1600
A	70	80
C	370	380
K	25	30
J	30	40

Mounting Dimensions of HH15(QP) Series Switch-Disconnectors

HH15(QP)-250/3

HH15(QP)-400/3 HH15(QP)-630/3

HH15(QP)-1000/3

HH15(QP)-1250/3 HH15(QP)-1600/3

	QP-2000	QP-2500
A	70	80

HH15(QP)-2000/3 HH15(QP)-2500/3

Panel Cut-out Dimensions

Switch Model	A	B	d
HH15(QSA)-125	65±0.2	Φ42+4-0	Φ4.5+0.5-0
HH15(QA)-125~200	65±0.2	Φ42+4-0	Φ4.5+0.5-0
HH15(QP)-250	65±0.2	Φ42+4-0	Φ4.5+0.5-0
HH15(QSA)-160~1250	88±0.2	Φ63+4-0	Φ5.5+0.5-0
HH15(QA)-400~1600	88±0.2	Φ63+4-0	Φ5.5+0.5-0
HH15(QP)-400~2500	88±0.2	Φ63+4-0	Φ5.5+0.5-0

Ordering Instructions

When placing an order, the customer must specify the switch type characteristics, voltage rating, current rating, number of poles, operating method, quantity, etc. For special orders, please consult our company’s technical department.
Example:
HH15(QSA)-125/3 400 V, fuse current 100 A, 10 units
HH15(QA)-200/3 380 V, 10 units
HH15(QP)-2000/32 380 V, 10 units