Data Sheet

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Modular DIN Rail Products

MCB

A-01 > >>

NB1 Miniature Circuit Breaker

Color coded contact position indicator

provides visual indication of the device

status and insulation function

Trip-free mechanism, device operation

can not be defeated by holding the

operator in the ON position

Breaking capacity up to 10000A

Magnetic trip elements provide

Type B, C and D trip characteristics

(IEC and EN 60898), while bimetallic

element protect against slight overload

Line and load side terminals accept bus bar

connections for reduced costs and more

efficient installation of multiple devices

Heat dissipation gap provides better cooling

Extendable DIN-rail holder for easy installation

Summary of content (6 pages)

PAGE 1
Modular DIN Rail Products MCB NB1 Miniature Circuit Breaker 1 Color coded contact position indicator provides visual indication of the device status and insulation function 4 Magnetic trip elements provide Type B, C and D trip characteristics (IEC and EN 60898), while bimetallic element protect against slight overload Line and load side terminals accept bus bar 5 connections for reduced costs and more efficient installation of multiple devices 2 Trip-free mechanism, device operation 6 Heat dissipatio
PAGE 2
Modular DIN Rail Products MCB NB1 Miniature Circuit Breaker 1. General A 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.
PAGE 3
Modular DIN Rail Products MCB 3. Technical data 3.1 curves IEC/EN 60898-1 AC type B curve t(s) IEC/EN 60898-1 AC type C curve t(s) 10000 5000 1h 2000 1000 500 10000 5000 1h 2000 1000 500 200 200 200 100 50 100 50 100 50 20 10 5 20 10 5 20 10 5 2 1 2 1 2 1 0.5 0.2 0.1 0.5 0.2 0.1 0.5 0.2 0.1 0.05 0.02 0.01 0.005 0.05 0.02 0.01 0.005 0.05 0.02 0.01 0.005 0.002 0.001 0.5 1 2 3 4 5 7 10 20 30 50 70 100 200 I/In IEC/EN 60947-2 AC type 8-12 In t(s) 10000 5000 1h 2000 1000 500 0.
PAGE 4
Modular DIN Rail Products MCB 3.2 Standard Rated current In IEC/EN 60898-1 A 1P, 2P, 3P, 4P 1P, 1P+N, 2P, 3P, 3P+N, 4P Rated voltage Ue V V Electrical features 1P, 2P 277/480 110/125 5k 10k 500 DC 50/60Hz A 6k 6000/10000 3 Energy limiting class Rated impulse withstand voltage(1.2/50) Uimp V 4000 Dielectric test voltage at ind. Freq. for 1 min kV 2 2 Pollution degree Rated current (A) Power loss per pole Max power loss per pole (W) 1, 2, 3, 4, 5, 6, 10 2 13, 16, 20, 25, 32 3.
PAGE 5
Modular DIN Rail Products MCB 3.3 Selectivity Power supply side: RT36-00 (fuse) In (A) 20 25 36 50 63 80 100 125 160 ＞12 6 6 5 3.6 3 2.5 2.2 1.9 1.7 1.5 ＞12 6 6 6 6 5.6 4.6 4.1 3.8 3 2.6 2.4 ＞12 6 6 6 6 6 6 5.5 4.5 4 3.5 3.3 ＞12 6 6 6 6 6 6 6 6 5 4.5 4.5 50 63 80 100 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.63 0.63 0.63 0.63 0.63 0.63 0.8 0.8 0.8 0.8 0.8 0.8 0.8 Is (kA) Load side: NB1-63, NB1-63H Curve B, C 4 1.2 0.9 0.8 0.7 ＞12 3.8 2.5 1.9 1.4 1.
PAGE 6
Modular DIN Rail Products MCB 3.5 Temperature derating The maximum permissible current in a circuit breaker depends on the ambient temperature where the circuit breaker is placed. Ambient temperature is the temperature inside the enclosure or switchboard in which the circuit breakers are installed. The reference temperature is 30℃ A Ambient temperature -35℃ -30℃ -20℃ -10℃ 0℃ 10℃ 20℃ 30℃ 40℃ 1 1.30 1.26 1.23 1.19 1.15 2 2.60 2.52 2.46 2.38 2.28 3 3.90 3.78 3.69 3.57 3.42 3.