KWH energy meter

MB421AC energy meter, din rail installation 7 digits LCD display, 5+2 digits(99999.91kWh CT operation Class 1 accurancy

MB421AC energy meter, din rail installation,meter

Functions and features1.35mm standard DIN rail installation, complying with standard DIN EN50022. Or front board installed (mounting holes center distance 63 mm), users can choose any one by themselves. 2. Ten pole width (Modulus 12.5mm), complying with standard JB/T7121-1993. 3. Type S wiring (Inlet from bottom, outlet from top), use CT connect operation, may select 27 CT ratio, the meter will read directly after set, and needn’t multiplied by CT rate. 4. 7 digits LCD display, 5+2 digits(99999.91kWh, Only when CT ratio 5:5A) or 7 digits display. It is choose by the CT ratio which is set. 5. Six LED instructions power supply state and signal of active energy impulse and reactive energy impulse and data communications state. 6. Standard configuration short terminals cover, may select extension terminals cover, in order to protect to use safety. (Product Configuration code is AF).

Technical parameters:

Model	Accuracy	Reference Voltage(V)	Current specifications(A)	Starting current(A)	Insulation performance
MB421AC	Active class 1 Reactive class2	3×127/220 3×230/400	CT/5A	0.01	AC voltage 4kv for 1 minute, 1.2/50us  waveform impulse voltage 6kv

  Dimension

Wiring diagram (Type S)

Terminal	Note	Terminal	Note
L1	L1 phase CT	9	L1 phase line
L2	L2 phase CT	11	L2 phase line
L3	L3 phase CT	13	L3 phase line
	(Inlet from bottom, outlet from top)	N	Neutral line
7 and 8	Port of active pulse output passive	5 and 6	Port of RS485 data communication
3 and 4	Port of reactive pulse output passive	1 and 2	CT ratio and stet SO output pulse rate

KWH energy meter