Page 563 - Motor_protection_and_control_Manual_motor_starters_ contactors

RA4 interface relays

Technical data

Utilization characteristics according to IEC
Type RA4
Standards IEC 60947 5-1
Rated insulation voltage Ui acc. to IEC 60947 5-1 250 V AC 50/60 Hz
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 … +60 °C
Storage -40 … +70 °C
Climatic withstand Category B according to IEC 60947-1 Annex Q
Maximum operating altitude ≤3000 m
Mounting positions Mounting positions 1, 1 ±30°, 2, 3, 4, 5
Connecting characteristics
Connection capacity (min. ... max.)
Rigid solid 1 x 1 ... 2.5 mm²
2 x 1 ... 2.5 mm²
Flexible with non insulated ferrule 1 x 0.75 ... 2.5 mm² 5
2 x 0.75 ... 2.5 mm²
Flexible with insulated ferrule 1 x 0.75 ... 2.5 mm²
2 x 0.75 ... 1.5 mm²
Lugs L < 8 mm
l L
Connection capacity acc. to UL/CSA 1 or 2 x AWG 18 ... 14
Stripping length 10 mm
Tightening torque 1.2 Nm / 11 lb.in
Degree of protection IP20 protection against direct contact in acc. with EN 50274
acc. to IEC 60947-1 / EN 60947-1 and IEC 60529 / EN 60529 RA4 wired and mounted on the associated contactor
Screw terminals Delivered in open position
All terminals M3.5
Screwdriver type Flat Ø 5.5 / Pozidriv 2
Working data
Surge suppression
For interface relay coil Included inside AF built-in surge protection
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 (1)
Between energization and: N.O. contact closing 42 ... 95 ms (AF09 … AF38, NF)
44 ... 105 ms (AF40 … AF96)
N.C. contact opening 40 ... 90 ms (AF09 … AF38, NF)
40 ... 100 ms (AF40 … AF96)
Between de-energization and: N.O. contact opening 15 ... 57 ms (AF09 … AF38, NF)
21 ... 107 ms (AF40 … AF96)
N.C. contact closing 17 ... 60 ms (AF09 … AF38, NF)
23 ... 112 ms (AF40 … AF96)
(1) For contactor coils 41, 11, 12, 13.
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
Switching frequency 600 cycles/h
Number of operating cycles 2 million operating cycles

1SBC101061S0201

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