| Standard | IEC/EN 60898-1 | IEC/EN 60947-2 | ||
| Electrical features | Rated current In | A | 1, 2, 3, 4, 6, 10, 13, 16, 20, 25, 32 | |
| Poles | 1P+N, | 1P+N, | ||
| Rated voltage Ue | V | 230/400~240/415 | ||
| Insulation voltage Ui | V | 500 | ||
| Rated frequency | 50/60Hz | |||
| Rated breaking capacity | A | 60000 | 0000 | |
| Energy limiting class | 3 | |||
| Rated impulse withstand voltage(1.2/50) Uimp | V | 4000 | ||
| Dielectric test voltage at ind. Freq. for 1 min | KV | 2 | 1.890 | |
| Pollution degree | 2 | |||
| Power loss per pole | Rated current (A) | Max power loss per pole (W) | ||
| 1, 2, 3, 4, 6, 10 | 2 | |||
| 16, 20, 25, 32 | 3.5 | |||
| 40, 50, 63 | 5 | |||
| Thermo-magnetic release characteristic | B, C, D | (8-12)In | ||
| Mechanical features | Electrical life | 4000 | ||
| Mechanical lif | 20000 | |||
| Contact position indicator | YES | |||
| Protection degree | IP20 | |||
| Reference temperature for setting of thermal element | ºC | 30 | ||
| Ambient temperature (with daily average≤35ºC) | ºC | -5...+40 | ||
| Storage temperation | ºC | -25...+70 | ||
| Installation | Terminal connection type | Cable/U-type busbar/Pin-type busbar | ||
| Terminal size top/bottom for cable | mm2 | 25 | ||
| AWG | 18-4 | |||
| Terminal size top/bottom for busbar | mm2 | 10 | ||
| AWG | 18-8 | |||
| Tightening torque | N·m | 2.5 | ||
| In-Ibs. | 22 | |||
| Mounting | On DIN rail EN 60715 (35mm) by means of fast clip device | |||
| Connection | From top and bottom | |||
| Combination with accessories | Auxiliary contact | YES | ||
| Shunt release | YES | |||
| Under voltage release | YES | |||
| Alarm contant | YES | |||
- Selectivity
Load side: K NB1-63, KNB1-63H Curve B, C | In (A) | Power supply side: RT36-00 (fuse) | ||||||||
| 20 | 25 | 36 | 50 | 63 | 80 | 100 | 125 | 160 | ||
| Is (kA) | ||||||||||
| ≤2 | 1.2 | 4 | >12 | >12 | >12 | >12 | >12 | >12 | >12 | |
| 3 | 0.7 | 1.2 | 3.8 | 5.3 | 6 | 6 | 6 | 6 | 6 | |
| 4 | 0.6 | 0.9 | 2.5 | 3.8 | 6 | 6 | 6 | 6 | 6 | |
| 6 | 0.5 | 0.8 | 1.9 | 2.5 | 4.5 | 5 | 6 | 6 | 6 | |
| 10 | 0.7 | 1.4 | 2.2 | 3.2 | 3.6 | 6 | 6 | 6 | ||
| 16 | 1.2 | 1.8 | 2.6 | 3 | 5.6 | 6 | 6 | |||
| 20 | 1.5 | 2.2 | 2.5 | 4.6 | 6 | 6 | ||||
| 25 | 1.3 | 2 | 2.2 | 4.1 | 5.5 | 6 | ||||
| 32 | 1.7 | 1.9 | 3.8 | 4.5 | 6 | |||||
| 40 | 1.7 | 3 | 4 | 5 | ||||||
| 50 | 1.5 | 2.6 | 3.5 | 4.5 | ||||||
| 63 | 2.4 | 3.3 | 4.5 | |||||||
Load side: KNB1-63, KNB1-63H Curve B, C | In (A) | Power supply side: NM8-100S/H/R | ||||||||
| 16 | 20 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | ||
| Is (kA) | ||||||||||
| ≤10 | 0.19 | 0.19 | 0.3 | 0.4 | 0.5 | 0.5 | 0.5 | 0.63 | 0.8 | |
| 16 | 0.3 | 0.4 | 0.5 | 0.5 | 0.5 | 0.63 | 0.8 | |||
| 20 | 0.5 | 0.5 | 0.5 | 0.63 | 0.8 | |||||
| 25 | 0.5 | 0.5 | 0.63 | 0.8 | ||||||
| 32 | 0.5 | 0.63 | 0.8 | |||||||
| 40 | 0.63 | 0.8 | ||||||||
| 50 | 0.8 | |||||||||
| 63 | ||||||||||
- Backup protection
Load side:K NB1-63, KNB1-63H Curve B, C | In (A) | Power supply side: RT16 series | ||||||
| 40 | 50 | 63 | 80 | 100 | 125 | 160 | ||
| Is (kA) | ||||||||
| 1~6 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | |
| 8~10 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | |
| 13 | 40 | 40 | 40 | 40 | 35 | 35 | 35 | |
| 16 | 40 | 40 | 40 | 40 | 30 | 30 | 30 | |
| 20 | 40 | 40 | 40 | 40 | 30 | 30 | 30 | |
| 25 | 40 | 40 | 40 | 40 | 30 | 30 | 30 | |
| 32 | 40 | 40 | 40 | 40 | 30 | 30 | 30 | |
| 40 | 40 | 40 | 40 | 40 | 30 | 30 | 30 | |
| 50 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | |
| 63 | 20 | 20 | 20 | 20 | 15 | 15 | 15 | |
Load side: KNB1-63, KNB1-63H Curve B, C | In (A) | Power supply side: NM8 | |||||
| NM8-125S | NM8-125H | NM8-125R | NM8-250S | NM8-250H | NM8-250R | ||
| Is (kA) | |||||||
| 1~6 | 15 | 18 | 18 | 15 | 15 | 15 | |
| 10~20 | 12 | 15 | 15 | 12 | 12 | 12 | |
| 32~40 | 12 | 15 | 15 | 12 | 12 | 12 | |
| 50~60 | 12 | 15 | 15 | 12 | 12 | 12 | |
- Temperature derating
placed. Ambient temperature is the temperature inside the enclosure or switchboard in which the circuit breakers are installed.
The reference temperature is 30ºC
| Ambient temperature | ||||||||||||
| -35ºC | -30ºC | -20ºC | -10ºC | 0ºC | 10ºC | 20ºC | 30ºC | 40ºC | 50ºC | 60ºC | 70ºC | |
| Rated current(A) | ||||||||||||
| 1 | 1.30 | 1.26 | 1.23 | 1.19 | 1.15 | 1.11 | 1.05 | 1.00 | 0.96 | 0.93 | 0.88 | 0.83 |
| 2 | 2.60 | 2.52 | 2.46 | 2.38 | 2.28 | 2.20 | 2.08 | 2.00 | 1.92 | 1.86 | 1.76 | 1.66 |
| 3 | 3.90 | 3.78 | 3.69 | 3.57 | 3.42 | 3.30 | 3.12 | 3.00 | 2.88 | 2.79 | 2.64 | 2.49 |
| 4 | 5.20 | 5.04 | 4.92 | 4.76 | 4.56 | 4.40 | 4.16 | 4.00 | 3.84 | 3.76 | 3.52 | 3.32 |
| 6 | 7.80 | 7.56 | 7.38 | 7.14 | 6.84 | 6.60 | 6.24 | 6.00 | 5.76 | 5.64 | 5.28 | 4.98 |
| 10 | 13.20 | 12.70 | 12.50 | 12.00 | 11.50 | 11.10 | 10.60 | 10.00 | 9.60 | 9.30 | 8.90 | 8.40 |
| 16 | 21.12 | 20.48 | 20.00 | 19.20 | 18.40 | 17.76 | 16.96 | 16.00 | 15.36 | 14.88 | 14.24 | 13.44 |
| 20 | 26.40 | 25.60 | 25.00 | 24.00 | 23.00 | 22.20 | 21.20 | 20.00 | 19.20 | 18.60 | 17.80 | 16.8 |
| 25 | 33.00 | 32.00 | 31.25 | 30.00 | 28.75 | 27.75 | 26.50 | 25.00 | 24.00 | 23.25 | 22.25 | 21.00 |
| 32 | 42.56 | 41.28 | 40.00 | 38.72 | 37.12 | 35.52 | 33.92 | 32.00 | 30.72 | 29.76 | 28.16 | 26.88 |
| 40 | 53.20 | 51.20 | 50.00 | 48.00 | 46.40 | 44.80 | 42.40 | 40.00 | 38.40 | 37.20 | 35.60 | 33.6 |
| 50 | 67.00 | 65.50 | 63.00 | 60.50 | 58.00 | 56.00 | 53.00 | 50.00 | 48.00 | 46.50 | 44.00 | 41.50 |
| 63 | 83.79 | 81.90 | 80.01 | 76.86 | 73.71 | 70.56 | 66.78 | 63.00 | 60.48 | 58.90 | 55.44 | 52.29 |
When several simultaneously operating circuit breakers are mounted side by side in a small enclosure, the temperature rise inside the enclosure causes a reduction in current rating.
You must then assign the rating (already derated if necessary according to ambient temperatuer) a downrating factor of 0.8.
Company Introduction
Wenzhou Korlen Electric Appliances Co., Ltd, It is a joint venture. My company is a manufacturer including design, development, produce and sale, professional producing MCB, MCCB, RCCB and AC contactor etc. Product enterprises. The company owns import and export power of self-run, expanding Europe and America, Middle East, Southeast Asia etc. Market, set a good Public praise.
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Korlen Electric Appliances is willing to make friends with social public, the world outside businessman join hands together for prosperous society and development to build a brighter future.
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