About the MCB type Dual Power Automatic transfer switch ATS

The MCB type Dual Power Automatic transfer switch ATS is part of the ELEHPD Dual Power AST range. .Normal conditions for operation and installation: Environmental Temperature Condition:-5~+40°C Installation site is not more than 2000 meters above sea level. Pollution Level: Grade 3 Installation Category: 3 Vertical installation or horizontal installation 4. Main parameter ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.

Full catalogue description: 4P 63A 380V MCB type Dual Power Automatic transfer switch ATS

Typical applications

Motor control centres and pump or fan starters
Machine building, conveyors, packaging and CNC equipment
HVAC control panels and building automation
Water treatment, irrigation and pumping stations
Panel retrofits replacing electromechanical control gear

How to specify the right Dual Power AST

Size the contact rating for the inductive load, not just the resistive current (AC-3 duty for motors)
Check the coil voltage and frequency available in the panel: 24 V DC, 110 V, 230 V or 400 V AC
Confirm the auxiliary contact count needed for the control and indication circuit
Match the enclosure rating to the environment (IP20 inside a panel, IP65 on the machine)

Specifications

4P 63A 380V MCB type Dual Power Automatic transfer switch ATS

.Normal conditions for operation and installation:

Environmental Temperature Condition:-5~+40°C

Installation site is not more than 2000 meters above sea level.

Pollution Level: Grade 3

Installation Category: 3

Vertical installation or horizontal installation

4. Main parameter

Rated Current Ie A	6,10,16,20,25,32,40	50, 63
Electrical Appliances Class	CB
Use Category	AC~33B
Tripping Current	5~10In (Type C), 10~15In (Type D),
Rated voltage Ue	220V (2P),380V (3P or 4P)
Rated frequency	50/60Hz
Rated short circuit connecting ability Icm (Peak)	9.18KA	6.615KA
Rated short circuit breaking ability Icn (effective value)	6KA	4.5KA

6. Terminal wiring diagram

Frequently asked questions about the MCB type Dual Power Automatic transfer switch ATS

What is the difference between a contactor and a relay?

A contactor is built for switching power circuits repeatedly at high current, often with motor duty ratings (AC-3) and arc-suppressing chambers. A relay switches control signals at low current. In practice: contactor for the motor, relay in the control circuit that drives the contactor coil.

How do I calculate the correct contactor size for a motor?

Use the motor's full-load current, apply the AC-3 rating for the operating voltage, and allow for the number of starts per hour. As a rule of thumb, the contactor's AC-3 rating should be at least equal to the motor FLC, then step up one frame if the duty is heavy.

Do you supply the coil voltage I need?

Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.

Are auxiliary contacts included?

Base models come with the standard auxiliary contact configuration for that frame. Add-on auxiliary blocks and mechanical interlocks can be quoted with the contactor.