YueQing ZEYI Electrical Co., Ltd.
YueQing ZEYI Electrical Co., Ltd.
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1P+N Mini Circuit Breaker SN6N 40A MCB/ Small Magnetic Trip Circuit Breaker
Application:
♦ Short-circuit protection
♦ Isolation function
♦ Overload protection
♦ Indication function of contact position
♦ Support 35mm Din-rail installation
♦ Support top incoming and bottom outgoing wiring type, or bottom incoming and top outgoing wiring type
♦ Able to select electrical accessories and achieve distant indication of MCB condition; breaking, closed, and fault tripping
♦ Able to select electrical accessories and realize under-voltage and over-voltage protection of MCB and distant shunt release
Instantaneous tripping characteristic:
Circuit breaker SB6 are designed for protection of distribution and branch circuits, having different load;
♦ Curve B----Device should not work in 0.1 second at current 3 In; at current 5 In should work in less than 0.1S
♦ Curve C---- Device should not work in 0.1 second at current 5 In; at current 10 In should work in less than 0.1S
♦ Curve D---- Device should not work in 0.1 second at current 10 In; at current 20 In should work in less than 0.1S
Over-current operating characteristics:
| No. | Rated current of release (A) | Initial state | Test current | Specified time | Result to be obtained | Remarks |
| 1 | 1～63 | code state | 1.13 In | t ≤ 1h | Non-trip | |
| 2 | 1～63 | upon the previous test | 1.45 In | t ＜ 1h | trip | setting current up to specified value steadily in 5s |
| 3 | In ≤ 32 | code state | 2.55 In | 1s ＜t ＜60s | trip | |
| In ＞ 32 | code state | 2.55 In | 1s ＜t ＜120s | trip | ||
| 4 | 1～63 | code state | 3 In | t ≤0.1s | Non-trip | B type |
| 1～63 | code state | 5 In | t ＜0.1s | trip | B type | |
| 1～63 | code state | 5 In | t ≤0.1s | Non-trip | C type | |
| 1～63 | code state | 10 In | t ＜0.1s | trip | C type | |
| 1～63 | code state | 10 In | t ≤0.1s | Non-trip | D type | |
| 1～63 | code state | 20 In | t ＜0.1s | trip | D type |
The Number of Poles:
Dimensions:
Specifications:
| Poles | 1P+N |
| Electrical specification | |
| Rated current(A) In | 1-40 |
| Rated frequency(Hz) | 50/60 |
| Rated working voltage(V) Ue | 230~ |
| Rated insulated voltage(V) Ui | 400 |
| Impulse withstand voltage(KV) Uimp | 4 |
| Rated short-circuit breaking capacity(KA) Icn |
3 |
| Instantaneous tripping type | B,C,D |
| Maximum working voltage Umax | 240 |
| Minimum working voltage Umin | - |
| Dielectric test voltage (kv) | 2 |
| Service life Mechanical standard value | 10000 |
| (O-C) Electrical Standard value | 4000 |
| Control and indication: | |
| Shunt release (SHT) | Optional |
| Undervoltage release(UVT) | Optional |
| Auxiliary contact(AUX) | Optional |
| Alarm contact(ALT) | Optional |
| Contact position indicator | None |
| Fault indication | Default |
| Connection and installation: | |
| Ambient temperature (with daily average≤35℃) | -5℃～+40℃ |
| Protection degree All sides | IP40 |
| Connection terminal | IP20 |
| Wire(㎟) | 10 |
| Busbar(㎟) | -- |
| Mounting | Cable |
| Pollution degree | 2 |
| Reference temperature for setting of thermal element(℃) | 30 |
| Storage temperature(℃) | -25℃～+70℃ |
| Tightening torque | 2.5 |
| Connection | Top and Bottom |
| Dimensions(mm) a(1P/2P/3P/4P) | 17.8 |
| b(1P/2P/3P/4P) | 83 |
| (WxHxL) c(1P/2P/3P/4P) | 77.5 |