Circuit Breaker for Equipment, Oil damping product NDB3-50 J4 2P, Industrial Automatic Control

2023/09/26Low Voltage Product 3640

Application

NDB3-50 series circuit breaker for equipment (hudraulic-magnetic circuit breaker) is applied in electrical system, of which the rated current is from 0.5A to 63A and the rated voltage is AC230/400V, AC250V, AC480/277V (50/60Hz) or up to DC125V, to protect the circuit against the overload current and short-circuit current. It is also can be used to make and break the circuit infrequently.

It is widely used in computer, peripheral equipment, industrial automatic devices, telecommunication equipment, power supply for telecommunication, UPS equipment, railway-engine, marine electrical systems, aerospace electrical power system, elevator control systems and mobile power equipment.

NDB3-50(1) Z4(2) 40(3)/ 1(4) L (5) L(6) AL(7) A(8) 0(9)-L (10) XXXX(11)

1	Frame Size	50
2	Tripping Curve	Z2 DC short delay J2 AC short delay Z4 DC medium delay J4 AC medium delay Z6 DC long delay J6 AC long delay
3	Rated Current (A)	0.5, 1, 2, 2.5, 3, 4, 5, 6, 7, 8, 9,10, 12, 15, 16, 20, 24, 25, 30, 32, 35, 40, 45, 50
4	Number of Poles	1. One pole 2. Two pole 3. Three poles (AC only)
5	Mounting Method	L M3 screw mounting Q Snap-in mounting M 6-32UNC screw mounting
6	Wiring Method	L M5 screw(≤50A) H Solder- in/Q.C. tab(normal≤30A , UL489≤20A) C Push-in stud (normal ≤50A,UL489≤30A ) F M5 screw with upturned lugs(normal ≤50A,UL489≤30A E 8-32UNC screw(normal ≤30A,UL489≤20A) G 10-32UNF screw (normal ≤50A,UL489≤30A) J 8-32UNC screw with upturned lugs (normal ≤30A,UL489≤20A) K 10-32UNF screw with upturned lugs (normal ≤50A,UL489≤30A) P M4 screw(normal ≤30A,UL489≤20A) R M4 screw with upturned lugs (normal ≤30A,UL489≤20A)
7	Actuator Code	S1 Black long handle, white legend, ON/OFF with current rating S2 Black long handle, white legend, ON/OFF, I/O with current rating S3 White long handle, black legend, ON/OFF, with current rating S4 White long handle, black legend, ON/OFF, I/O, with current rating S5 Yellow long handle, black legend, ON/OFF, with current rating S6 Yellow long handle, black legend, ON/OFF, I/O, with current rating D1 Black short handle, white legend, ON/OFF, with current rating D2 Black short handle, white legend, ON/OFF, I/O, with current rating D3 White short handle, black legend, ON/OFF, with current rating D4 White short handle, black legend, ON/OFF, I/O , with current rating D5 Yellow short handle, black legend, ON/OFF , with current rating D6 Yellow short handle, black legend, ON/OFF, I/O , with current rating Y1 Black rocker, vertical white legend, ON/OFF, I/O , with current rating Y2 Black rocker, horizontal white legend, ON/OFF, I/O , with current rating Y3 Black rocker, vertical white legend, ON/OFF, I/O Y4 Black rocker, horizontal white legend, ON/OFF, I/O Y5 Black rocker, vertical white legend, ON/OFF, I/O, with current rating ,indication ON Y6 Black rocker, horizontal white legend, ON/OFF, I/O, with current rating, indication ON Y7 Black rocker, vertical white legend, ON/OFF, I/O, with current rating, indication OFF Y8 Black rocker, horizontal white legend, ON/OFF, I/O, with current rating, indication OFF A1 Black flat rocker, vertical white legend, ON/OFF, I/O, with current rating, indication OFF, handle position ”OFF” with guard A2 Black flat rocker, vertical white legend, ON/OFF, I/O, with current rating, indication OFF A4 Black flat rocker, horizontal white legend, ON/OFF, I/O, with current rating, indication OFF
8	Actuator Number	A One per pole B One per multi-pole(for 2-pole or 3-pole products)
9	Accessory Code	0 No accessory 1 With auxiliary contact (in the left side as viewed from front of breaker)
10	Certificate Code	No code CCC,TUV,CE R CCC,TUV,CE,UL1077 L CCC, TUV,CE, UL489A(for DC product only) I UL1500 certificate K CCC TUV CE UL489(for AC product only)
11	Customer Code	Customer code(Additional option)

NDB3-30 Specification

Standards:	GB/T 17701, IEC 60934, EN60934, UL1077, UL489A, UL489
Rated Working Voltage(Ue)	DC80V, AC250V，AC415V, AC125/250, AC120/240
Power Frequency Withstand Voltage	3000V(Main circuit), 1000V(Auxiliary circuit)
Mechanical/ Electrical Endurance	10000/6000 times
Tripping Model	Hydraulic-magnetic type
Parameter for Auxiliary Contact	AC250V 5A

Rated Voltage (V)	Rated Current (A)	Number of Poles	Breaking Capacity (A)
Rated Voltage (V)	Rated Current (A)	Number of Poles	3C (GB/T 17701)	UL1077	UL489A	UL489	TUV/CE (EN60934)
DC80	1~30	1, 2	3000	3000, U1a	3000	/	3000
DC80	30~50	1, 2	1500	1500, U1a	3000	/	1500
DC65	1~50	1, 2	/	3000, U1a	/	/	/
DC32	1~50	1, 2	/	5000, U3	/	/	/
AC240	1~30	1	4000(L, K) 3000(R, I)	/	/	/	/
AC240	30~50	1	3000(L, K) 1500(R, I)	/	/	/	/
AC415	1~30	2, 3	4000(L, K) 3000(R, I)	/	/	/	/
AC415	30~50	2, 3	3000(L, K) 1500(R, I)	/	/	/	/
AC250	1~30	1	/	5000, C1a 3000, U1A	/	/	/
AC250	30~50	1	/	1000, U1a	/	/	/
AC125/250	1~30	2	/	3000, U1a	/	/	/
AC125/250	30~50	2	/	2000, U3	/	/	/
AC250 3φ	1~30	3	/	5000, U1a	/	/	/
AC250 3φ	30~50	3	/	1000, U3	/	/	/
AC120	1~30	1	/	/	/	5000	/
AC120/240	1~30	2, 3	/	/	/	5000	/

Working Condition:

Altitude: ≤2000m
Operation temperature: -40℃~+85℃
Humidity: ≤95%
Service place without explosive media, gas and dust which are corrosive and conductive.
Be mounted free from rain and snow

Packing and depositing

Maximum packing quantity:
1-pole: 30 pieces in a box, 3 boxes in an overwrap carton.
2-pole: 15 pieces in a box, 3 boxes in an overwrap carton.
3-pole: 10 pieces in a box, 3 boxes in an overwrap carton
The products should be stored in the warehouse where there is ventilation. The
relative humidity there should not exceed 80%, and the ambient temperature there is between
-25℃ to +60℃. In addition, there should not be acidic, alkaline and corrosive gas in
the air. The products should not be deposited more than 3 years in the above mentioned
conditions since the producing date.

The prev: Hydraulic- magnetic circuit breaker, NDB3-30 Z4 1P Circuit Breaker for EquipmentThe next: SVM5H-630H/R 1000VAC MCCB

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