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DGLR Series Isolation Switch Fuse Group - High-Quality China Suppliers Factory for AC 690V, Up to 1250A

The DGLR series switches are ideal for AC 50Hz applications, with a rated voltage of up to AC690V and a maximum heating current of 1250A. Designed for use in distribution and motor circuits that experience high short-circuit currents, these switches provide reliable circuit connection and disconnection under load. They also ensure enhanced safety through effective overcurrent and short-circuit protection. Manufactured in compliance with GB/T14048.3 and IEC60947-3 standards, our switches are available in various current ratings including 63A, 160A, 250A, 400A, 630A, 800A, 1000A, and 1250A. As a leading factory in China, we proudly supply high-quality electrical components to meet your needs.

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Product Detail

Meaning of Product Model

Normal Working and Installation Conditions

● 1. The ambient air temperature shall not exceed +40℃ and not be lower than -5℃.

● 2. The altitude of the installation site shall not exceed 2000m.

● 3. 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.

● 4. The pollution level of the surrounding environment is level 3.

● 5. The switch should be installed in a place without significant shaking, impact vibration, and invasion of rain and snow. At the same time, the installation location should be free of explosive hazardous media, and there should be no gas or dust in the media that can corrode metals and damage insulation.

Structure Characteristics

✓ 1. The acceleration mechanism with instantaneous release of spring energy storage achieves fast connection or disconnection, independent of the speed of the operating handle, and improves the ability to extinguish arcs.

✓ 2. The shell made of unsaturated polyester glass fiber reinforced plastic (DMC) has good flame retardancy, dielectric properties, and operational safety.

✓ 3. Parallel multi break contact has self-cleaning function and reliable overcurrent and short-circuit safety protection function.

✓ 4. Can ensure that the circuit is connected or disconnected with load.

✓ 5. Replacing the melt is safe, convenient, and fast.

Main Technical Parameters

Relationship between switches and fuses

Agreed heating current lth	Equipped with fuse code	Rated current of fuse (A)
63	NT00C、NH00C	4、6、10、16、20、25、32、40、50、63
125	NT00、NH00	10、16、20、25、32、40、50、63、125
160	NT00、NH00	10、16、25、32、40、50、63、80、100, 125、160
250	NT1、NH1	63、80、100、125、160、200、250
400	NT2、NH2	160、200、250、315、400
630	NT3、NH3	250、315、400、500、630
800	NT4、NH4	800
1000	NT4、NH4	800、1000
1250	NT4、NH4	800、1000、1250

Main technical parameters of switches

Model specifications			DGLR-63	DGLR-125	DGLR-160	DGLR-250	DGLR-400	DGLR-630	DGLR-800	DGLR-1000	DGLR-1250
Agreed heating current (A)			63	125	160	250	400	630	800	1000	1250
Rated insulation voltage (V)			800	800	800	800	800	800	800	800	800
Rated impulse withstand voltage (kV)			4	4	4	4	8	8	8	8	8
Rated working current (A)	380V		63	125	160	250	400	630	800	1000	1250
Rated working current (A)	660V		63	100	125	200	315	500	630	800	1000
Rated making/breaking capacity(A)	AC660V,AC-23B	Connect	630	1250	1600	2500	4000	6300	8000	10000	12500
Rated making/breaking capacity(A)	AC660V,AC-23B	Breaking	504	1000	1280	2000	3200	5040	6400	8000	10000
Mechanical lifespan (times)			1400	1400	1400	1400	800	800	500	500	500
Electrical lifespan (times)			200	200	200	200	200	200	100	100	100
Operating Force (N)			7.5	16	16	16	30	30	40	40	40
Rated limit short circuit current(KA)			50	50	50	50	50	50	100	100	100

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

Customers are required to indicate the product name, model, rated current, number of poles, and quantity. For example, DGLR-400/3C11, equipped with 315A fuses, quantity of 10 units.

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

Frequently Asked Questions

Q1: What is the operating temperature range for the DGLR switch?

The ambient air temperature should be between -5℃ and +40℃ for normal operation.

Q2: Can the DGLR series switch handle load during disconnection?

Yes, the structure is designed to ensure that the circuit can be connected or disconnected safely even with a load.

Q3: What material is used for the switch shell?

The shell is made of DMC (unsaturated polyester glass fiber reinforced plastic), providing excellent flame retardancy and dielectric properties.

Q4: What is the maximum installation altitude for these switches?

The installation site altitude should not exceed 2000 meters to ensure optimal performance.

Q5: Is the fuse replacement process complicated?

No, the design allows for safe, convenient, and fast replacement of the melt/fuse.

Q6: What information is needed when placing an order?

Please provide the product name, model, rated current, number of poles, and the specific quantity required.