3 Pole Moulded Case Circuit Breaker EM400N EM400S EM400H 4 Pole 250 Amp
3 Poles Moulded Case Circuit Breaker MCCB EM400N/EM400S/EM400H 4P KEMA
Application:
♦ EM series moulded case circuit breaker is applied with with rated insulating voltage 500V, rated working voltage 690V in AC (50/60) Hz condition and used for infrequent exchange. The MCCB is protecting in overload, short-circuit, and under voltage situation to protect circuit system and power device from damage.
♦ The MCCB can be devided into B,N,S,H types according to their rated limited short-circuit breaking capacity.
♦ The MCCB is advantageous for its compact body, high breaking capacity, short arccasting and superior aseismatic function.
♦ The MCCB has function of insulation with its mark"
"
♦ The product complies with IEC 60947-2, GB14048.2
Normal installtion conditions:
♦ Height above sea level: ≤2000m
♦ Ambient medium temperature: ≤+40℃, ≥5℃
♦ It can endure the effect of humid air and the effect of salt mist, oil mist and fog bacteria.
♦ In the place within the midium without danger of explosion and without corrosion of metal box, damage of insulation gases
and conductive dust
♦ No damage of rain and snow
♦ Pollution degree: 3
Tripping characteristic:
| Rated tripping current (A) | E-magnetic tripping current (A) | Remarks | 1.05In(cold)un-working duration(h) |
1.30In(hot)un-working duration(h) |
| 10≤In≤63 | 10In x (1±20%) | Distribution type | ≥1 | ≤1 |
| 63≤In≤100 | 10In x (1±20%) | Distribution type | ≥2 | ≤2 |
| 100≤In≤800 | 5In x (1±20%) 10In x (1±20%) |
Distribution type | ≥2 | |
| 10≤In≤800 | 12In x (1±20%) | Motor-protection type | 1.0In(cold) un-working duration(h) |
1.20In(hot) un-working duration(h) |
| ≥2 | ≤2 |
Specifications:
| Poles | 3P,4P | ||
| Electrical Specification | |||
| Rated frame level current Inm(A) | 400 | ||
| Rated current (A) In | 225,250,315,350,400 | ||
| Rated insulated voltage Ui (AC V) Ui | 690 | ||
| Rated impulse withstand voltage (V) Uimp | 8000 | ||
| Rated working voltage Ue (AC V) | 400/415 | ||
| Type of breaking | N | S | H |
| Rated limited short-circuit breaking capacity Icu (kA) | 35 | 50 | 65 |
| Rated working short-circuit breaking capacity Icu (kA) | 35 | 37.5 | 48.75 |
| Isolation function | |||
| Service life Mechanical Standard value | 5000 | ||
| (O-C) Electrical Standard value | 1000 | ||
| Connection And Installation | |||
| Protection degree All sides | IP40 | ||
| Wiring terminal | IP20 | ||
| Wiring assembly | Front/Rear | ||
| Plug-in assembly | □ | ||
| Wiring Draw-out assembly | - | ||
| Arcing distance(mm) | 0,≤50 | ||
| Dimensions(mm) L | 257 | ||
 W |
150 | 198 | |
| (W x H x L) H | 106.5 | ||
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