The Microstart manufactured to BSEN 60947-4-2 is designed to control three phase AC Motors with nominal loads up to 25 amps. The controller switches 2 phases with the 3rd continuously connected. Initial torque is adjustable as well as independent user adjustments of Ramp up and Ramp down. Overload protection is not provided in the Controller and must, therefore, be installed separately. Controller is internally by-passed.
12A
25A
CE Marked
Conforms to all current relative directions
Rated Installation (volts)
630V
Approvals
CSA/UL
UL CSA Pending
Weights
270 grammes
800 grammes
IP Rating
IP20
Starting Torque
5- 85%
0 - 70%
Ramp Up Time
0.5 - 5 secs
1 - 10 secs
Ramp Down Time
1 - 30 secs
LED Indication
Supply On - Green Ramping - Yellow 1 Running - Yellow 2
Power On - Green Ramping - Yellow(F) Bypass - Yellow(C) Overheat Device - Red(F) Overheat Thymistor - Red(C) Ø Loss - Phase Loss Red (F) 4khz Ø Loss - Under Voltage Red (F) 1.3khz Wrong Ø Red (F)
Temprature Rating
-20° to +50°C
-20° to +60°C
Utilisation Category
AC53b integral by-passing of Controller
Overload Current Profile
X/tx 6/13 (BSEN60947-4-2)
X/tx 4/5
PCT Thymistor
N/A
Direct input To P1, P2
Functional Diagram
Operations Diagram
Product Code
Voltage
Current Rating
Motor Size
Dimensions
SAF 4012
230/400V±15%
5.5Kw
92mmx45mmWx102mmD
SAF 4025
11Kw
114mmx90mmWx108.5mmD
LI,L2,L3
Mains 230/400V AC ±15% 50/60Hz
U/T1, V/T2, W/T3
Output to motor
SAF 4012 Control Voltage Terminal 12A
A1-A2 24V-110V AC/DC ± 15% A1-A3 110V-400V AC ± 15%
SAF 4025 Control Voltage Terminal 25A
A1-A2 24V-550V AC/DC
P1 P2
S2S Electronics reccommend high speed fuses if type 2 co-ordination is required in accordance with IEC60947-4-2
Time Between Rampings (SAF 4012)
1 Ramp (A)
Ramp Time (seconds)
1
2
5
10
72
2.5 min
5 min
40 min
n/a
60
1.5 min
3 min
13 min
17 min
48
50 sec
10 min
36
30 sec
1 min
7 min
24
15 sec
40 sec
12
10 sec
20 sec
70 sec
6
5 sec
9 sec
40°C 25A : AC-536 :4.5:65 (50 starts/hour) 50°C 25A : AC-536 :4.5:85 (40 starts/hour) 60°C 25A : AC-536 :4.5:175 (20 starts/hour)