Page 599 - Motor_protection_and_control_Manual_motor_starters_ contactors

Interface relays

Technical data
Type RA5-1
Utilization characteristics according to IEC
Standards IEC 60255-5
Rated insulation voltage Ui acc. to IEC 60947-4-1 250 V AC
Ambient air temperature
In free air operation at Uc = 24 V DC (between E1 and E2) -25…+70 °C
from 0.85 to 1.1 x Uc -25…+55 °C 3
Storage -40…+70 °C
Climatic withstand Complies with that of associated contactors
Maximum operating altitude 3000 m
Mounting positions No limitation
Fixing Using the contactor A1 and A2 teminal connecting parts
Connecting characteristics
Connection capacity (min. ... max.)
Rigid solid 1 x 1...4 mm²
2 x 1...4 mm²
Flexible with ferrule 1 x 0.75...2.5 mm²
2 x 0.75...2.5 mm²
Lugs L < 8 mm
l L
l > 3.5 mm
Tightening torque
Recommended 1 Nm
Max. 1.2 Nm
Degree of protection Protection against direct contact in acc. with EN 50274
acc. to IEC 60947-1 / EN 60947-1 and IEC 60529 / EN 60529 RA5-1 wired and mounted on the associated contactor
Screw terminals Delivered in open position, screws of unused terminals must be tightened
All terminals M3.5
Screwdriver type Flat Ø 5.5 / Pozidriv 2
Working data
Surge suppression
For contactor coil Varistor
For interface relay coil Diode
Protection against polarity reversal between terminals E1 and E2 Diode
Interface relay operating time Closing and drop-out ≤ 10 ms
Total operating time, interface relay + contactor
Between energization and: N.O. contact closing 20…37 ms
N.C. contact opening 17…32 ms
Between de-energization and: N.O. contact opening 17…25 ms
N.C. contact closing 20…28 ms
Electrical input data
Control voltage (E1 and E2 terminals) Uc
Rated value 24 V DC
Max. range at ambient temperature 20 °C 19…30 V DC
Max. consumption for Uc = 24 V DC, θ = 20 °C 0.3 W
"0" status (relay open) for Uc ≤ 2.4 V DC
for Ic < 1 mA
"1" status (relay closed) for Uc ≥ 19 V DC
Max. short supply interruption immunity time 2 ms
Electrical output data
Switching voltage (A0 and A2 terminals) ≤ 250 V AC
Electrical durability
Number of operating cycles 2 millions (600 cycles/h) on UA16(RA) ... UA75(RA), GA75, GAE75 contactors
0.5 million (600 cycles/h) on UA95(RA) and UA110(RA) contactors
Connection
The "E1+" and "E2-" input terminals must be connected, according to their polarity, to the PLC
PLC
Output output.
U c – + The RA5-1 is equipped with two terminal pads for connection to the A1 and the A2 terminals of the
≤ 250 V AC 24 V DC
contactor coil.
A0 A2 E2 – E1 +
This coil is supplied between the A0 and the A2 terminals of the RA 5-1.
1SBC101337S0201 Rev. A
RA 5-1 Mounting: terminals pads clamped inside the contactor coil terminals.
A1
KM1
A2 E0742DG

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