1、 Scope of application
QCX8(MSB)-9、 12. 16, 25, 30, 37, 45, 65, 85 electromagnetic starters (hereinafter referred to as starters) are manufactured based on technology introduced by the German BBC company. Suitable for direct starting and stopping control of AC motors with rated voltage of 50HZ (60Hz) to 660V and rated control power of 50KW in the main circuit, and providing overload and phase failure protection for the motors. It has a voltage loss protection function when the circuit voltage disappears.
QCX8 (MSB) Magnetic Starter Model Description

>>Technical parameters
1. Form of starter;
a. It has a metal shell:
b. The number of poles is two poles;
c. The extinguishing medium is narrow gas;
d. The operating mechanism is a manual button.
2. Rated working current of starter and maximum power control of three-phase motor
| model |
Rated working current (A) |
Maximum under different rated operating voltages Control power (kW) |
| Main contact |
auxiliary contact |
The normally open contact of the thermal overload relay |
| 380V |
660V |
380V |
380V |
220V |
380V 500V,660V |
| QC×8(MSB)9 |
eight point five |
eight point five |
one point two |
two |
two point two |
four |
| QC×8(MSB)12 |
eleven point five |
four point nine |
three |
five point five |
| QC×8(MSB)16 |
fifteen point five |
sixty-seven |
four |
seven point five |
| QC×8(MSB)25 |
twenty-two |
thirteen |
six point five |
eleven |
| QC×8(MSB)30 |
thirty |
seventeen point five |
nine |
fifteen |
| QC×8(MSB)37 |
thirty-seven |
twenty-one |
eleven |
eighteen point five |
| QC×8(MSB)45 |
forty-four |
twenty-five |
thirteen |
twenty-two |
| QC×8(MSB)65 |
sixty-five |
forty-five |
eighteen point five |
forty |
| QC×8(MSB)85 |
eighty-five |
sixty-five |
twenty-five |
fifty |
3. Power consumption of starter attraction coil:
| Starter model |
Instantly upon startup |
During suction |
| QCX8(MSB)9.12.16 |
60VA |
9VA22W |
| QCX8(MSB)25.30 |
85VA |
10VA3W |
| QCX8(MSB)37.45 |
175VA |
22VA5W |
| QCX8(MSB)65.85 |
270VA |
30VA7.5W |
4. Overload relay setting current adjustment range in starter:
| Starter model |
Model of thermal overload relay |
Rated current regulation range of thermal overload relay (A) |
| QCX8(MSB)9 |
T16 |
0.11-0.16 0.14-O.21 O.19-0.29 0.27-O.4 0.35-.O.52 0.42-0.63 0.55-0.83 0.70-1.O 1.3-1.8 1.5-2.1 1.7-2.4 2.1-3.0 2.7-4.0 3.4-4.5 4.O-6.O 5.2-7.5 6.3-9.0 |
| QCX8(MSB)12 |
T16 |
7.5-11.0 9O-13.O |
| QCX8(MSB)16 |
T16 |
12.0-17.6 |
| QCX8(MSB)2 |
T25 |
7.5.11 10-14 13-19 18-25 |
| QCX8(MSB)30 |
T25 |
24-32 |
| QCX8(MSB)37 |
T45 |
14-21 18-27 25-35 30-45 |
| QCX8(MSB)45T45 |
T45 |
30-45 |
| QCX8(MSB)65 |
Z85 |
12-20 17-29 25-40 35-55 45-70 |
| QCX8(MSB)85 |
T85 |
45-70 60-100 |

QCX8 (MSB) magnetic starter