Automatic Transfer Switch

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E2R-125 Dual Power Automatic Transfer Switch

The E2R Series Dual Power Automatic Transfer Switch is a compact, rail-mounted solution designed for residential PZ30 distribution boxes. With current ratings from 16A to 63A , it ensures reliable power continuity by automatically switching to backup power within 50ms when main power fails. Operating at AC 400V/50Hz with an electrical life of 2000 cycles, it features both manual and automatic modes, clear status indicators, and simple installation. Ideal for maintaining uninterrupted power in household applications.

Product Details

Product Descriprion

The E2R-63A Dual Power Automatic Transfer Switch represents advanced PC-level switching technology.. This modular unit combines two micro circuit breakers with mechanical/electrical interlocks and an integrated controller, specifically engineered for DIN-rail installation in PZ30 distribution boxes. Rated for currents 16A-63A, it operates at AC 400V/50Hz with impressive specifications including 2000 electrical cycles, 50ms switching time, 8kV impulse withstand voltage, and 50kA short-circuit rating.

The switch features a smart control system with manual/auto selection, dual relay outputs, and status monitoring terminals. Its compact design (2P/3P/4P lengths: 107.5/125/142.5mm) incorporates safety spacings (S1≥30mm, S2≥203mm) and operates within -5°C to +40°C temperatures at altitudes ≤2000m. The internal bistable relay mechanism ensures rapid, reliable transfer while minimizing power consumption. Maintenance protocols require professional servicing every 6-12 months, including insulation resistance checks (≥10MΩ via 500V megger) and contact inspection. Complete with detailed wiring diagrams and installation guidelines, this ATS delivers robust power continuity for critical residential applications.

Basic Information

Model	E2R-63A
Rated current Ie A	16	20	25	32	40	50	63
Insulation voltage Ui V	AC 690V,50Hz
Rated voltage Ue V	AC 400V,50Hz
Level	PC level capable of manufacturing and withstanding without generating short-circuit current
Usage category	AC-33/B			AC-3/B
Measuring rod	2P		3P	4P
Weight (kg)	1.7		2.1	2.6
Electrical lifespan	2000 times;manual operation:5000 times
Rated short-circuit current Ig kA	50kA
Short circuit protection device (fuse)	RT16-00~63A
Rated impulse withstand voltage kV	8kV
Control circuit	Rated control voltage Us:AC220V,50Hz Normal working conditions:85% Us ~110% Us
Auxiliary circuit	2 relays,each with two sets of contact converter contact capacity:AC220V,50Hz le=5y
Contactor conversion time ms	<50ms
Operation conversion time ms	<50ms
Return conversion time ms	<50ms
Power off time ms	<50ms

Product Model and Classification

E2R	R	-	63A
Enterprise code	orbital type	£	current level

Normal Operating Time and Installation Conditions

① Surrounding air temperature:The highest temperature shall not exceed 40 ,the lowest shall not be lower than-5,and the average temperature within 24 hours shall not exceed 35

② Altitude:The sea level at the installation site should not exceed 2000m

③ Atmospheric conditions:When the highest temperature reaches 40℃,the relative humidity of the installation site should not exceed50%;When the temperature reaches the lowest temperature of-5℃and the relative humidity is high,for example,when the temperature is 25℃,the relative humidity is 90%.Due to temperature changes,special measures should be taken to address occasional condensation on the surface of the product.

④ Pollution level:TSE pollution level meets the specified level 3

⑤ Installation conditions:TSE can be vertically installed in control cabinets or distribution cabinets.Ensure that the installation distance meets the requirements in Figure 1.

Installation and Wiring

⑴ Please check the integrity of TSE before installation.Then use the joystick to turn on and off TSE,check the flexibility of the transmission device,and detect the generation and disconnection conditions of the load at each stage of the normal and backup power supply

⑵ Control voltage detection:AC50HZ AC220V.The coil in the control circuit should not be too long.The cross-section a area of copper wire should not exceed2.0mm²

⑶ According to the installation requirements of the power distribution system,please equip appropriate circuit breakers to ensure the safety of personnel and equipment.

Note

Manual/Automatic Operation
SE can ensure the performance of power generation and power-off in circuit operation,but TSE cannot guarantee the above performance for manual operation due to differences in power generation and power-off speed or operator.Excessive silver alloy loss may occur during manual power generation and power outages.Therefore,when all power is cut off to check and maintain the operating system and contacts,simply pull the7selection switch to the manual position.Generally,please turn the selection switch to the automatic position.When operating manually,pull the selection switch to the manual position.After completing the manual operation,pull the selection switch from the manual position to the automatic position.

Control Circuit
SE will instantly become active.After the conversion is completed,the coils in the control circuit will be disconnected by the internal converter.At rated voltage of 80%to 110%,the coil can operate normally.Low voltage can cause the coil to heat up or even self ignite.