NQ3 Series DOL Electromagnetic Starter
1.1 NQ3 series electromagnetic starter ( “starter” for short hereinafter) applies mainly to circuit with AC current of 50Hz (or 60Hz), rated operational voltage of 660V and rated controlled power up to 11kW (current up to 22A) for using to control the direct start and halt of the electromotor to protect the motor from overload and phase failure.
1.2 The starter conforms to standards IEC/EN60947-4-1
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Related products
NXB-63 Miniature Circuit Breaker
Overload protection, short circuit protection and isolation. It is widely used in building power distribution, industrial power distribution, as well as control and protection for a variety of equipment with operating current not exceeding 125A.
CATALOGUE: NXB-63 Miniature circuit breaker PDF
NB1-63 Miniature Circuit Breaker
1.1 Function
protection of circuits against short-circuit currents,protection of circuits against overload currents,switch,isolation.
NB1 circuit-breakers are used in domestic installation, as well as in commercial and industry electrical distribution systems.
1.2 Selection
Technical data of the network at the point considered:short-circuit current at the circuit-breaker installation point, which must always be less than the breaking capacity of this device,network normal voltage.
Tripping curves:
B curve (3-5In)
protection for people and big length cables in TN and IT systems.
C curve (5-10In)
protection for resistive and inductive loads with low inrushcurrent.
D curve(10-14In)
protection for circuits which supply loads with high inrush current at the circuit closing
(LV/LV transformers, breakdown lamps).
1.3 Approvals and certificates
Detailed information, please refer to Certificates Table on the last page.
NXB-125 Moulded Case Circuit Breaker
Rated current: 63A, 80A, 100A, 125A;
Rated voltage: 240V ~ (1P), 415V ~ (2P, 3P, 4P);
Frequency: 50Hz;
Electromagnetic release type: C, D;
Number of poles: 1P, 2P, 3P, 4P;
Mechanical life: 20000 cycles;
Electrical life: 6000 cycles (In≤100A); 4000 cycles (In＞100A);
Rated short-circuit breaking capacity(Icu): 10000A;
Short-circuit breaking capacity(Ics): 7500A;
Rated impulse withstand voltage(Uimp): 4kV;
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NXB-125 Moulded Case Circuit Breaker PDF
NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection
1.1 Selection
Rated residual operating current
I∆n = 30 mA: additional protection in the case of direct contact.
Tripping class
AC class – Tripping is ensured for sinusoidal, alternating currents, whether they be quickly applied or slowly increase.
Tripping curve
B curve (3-5 In) protection and control of the circuits against overloads and short-circuits; protection for people and big
length cables in TN and IT systems.
C curve (5-10 In) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current.
1.2 Approvals and certificates
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NB3LEU Residual Current Operated Circuit Breaker with Over-current Protection PDF
NB1-63DC DC Miniature Circuit Breaker
1.1 Certificates: CCC,CE,CB,TUV;
1.2 Standard: IEC/EN 60947-2 ,RoHS;
1.3 Rated voltage up to 1000V, Rated current up to 63A;
1.4 Protection of circuits against overload currents;
1.5 Protection of circuits against short-circuit currents;
1.6 NB1-63 DC circuit-breakers are used incommunication systems and PV DC systems.
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NB1-63DC DC Miniature Circuit Breaker PDF
NB310L(3PN) Residual Current Operated Circuit Breaker with over-current protection (Magnetic)
1.1 Function
Personnel and fire protection: Cable and line protection against overload and short-circuits.
1.2 Selection
Rated residual operating current
I∆n ＝30 mA: additional protection in the case of direct contact.
Tripping class
A and AC class
A class tripping is ensured for sinusoidal, alternating residual
currents as well as for pulsed DC residual currents, whether they be quickly or slowly increase.
AC class tripping is ensured for sinusoidal, alternating residual currents, whether they be quickly or slowly increase.
Tripping curve
B curve (3 In-5 In) protection and control of the circuits against overloads and short-circuits; protection for people and big length cables in TN and IT systems.
C curve (5 In-10 In) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current.
1.3 Approvals and certificates
CE/CB/KEMA
1.4 Add-on devices
XF9 auxiliary contacts
S9 shunt release
V9 under voltage release
OVT-1 over voltage release
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NB310L(3PN) Residual Current Operated Circuit Breaker with over-current protection PDF
NB2LE Residual Current Operated Circuit Breaker
The NB2LE residual current operated circuit breakers are suitable for lines with AC 50/60Hz, rated voltage 240V, rated current up to 25A and for purposes of residual current protection, overload
and short circuit protection. When any personal electric shock occurs or the circuit leakage current exceeds the predetermined value, the residual current operated circuit breaker can automatically cut off the power supply in a very short period of time, so that the safety of persons and electrical equipment can be protected. The residual current operated circuit breaker can be used for infrequent conversion of lines under normal conditions, and applied under occasions such as industrial, and commercial, high-rise buildings and residential houses.
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NB2LE Residual Current Operated Circuit Breaker PDF
