20
MODULAR STEP RELAYS
SERIES
•A range of one module (17.5mm) wide modular step relays
with 1 or 2 NO 16A 250V AC contacts
•Test button with mechanical indicators
•6 functions available
•AC/DC coils
•Identification label
•Clamps suitable for two 4 mm2 wires each
•Clamps not lined up to make wiring easier
•DIN rail 46277 mount
•Possible to connect illuminated push buttons (by means of capacitor)
•In conformity with IEC 669 - 1 and IEC 669 - 2 - 2
•Approvals (according to type): IMQ, RINA, SEV, UTE
20
20.22
20.23
RINA
MODULAR STEP RELAY
TYPE 20.21 single phase switch 1 NO
TYPE 20.22 double phase switch 2 NO
TYPE 20.23 double phase switch 1 NO + 1 NC
TYPE 20.24 4 sequence double phase switch
TYPE 20.26 3 sequence double phase switch
TYPE 20.28 4 sequence double phase switch
- 20.28 type suggested for rolling shutter automation
- ordering information: see page 24
58.4
43.5
17.4
84
26.5
45
84
A1 1
A2 2
20.21
TYPE
20.21
20.22
20.23
number
of steps
2
2
2
A1 1 3
A2 2 4
20.22
20.23
20.24
20.26
20.28
SEQUENCES
1°
4°3°2°
22
20.24
20.26
20.28
4
3
4
TECHNICAL DATA
DIELECTRIC STRENGTH
tested at:
leakage current
≤ 30 mA for
1 min at 50 Hz
INSULATION RESISTANCE
MAXIMUM SWITCHING
FREQUENCY
AMBIENT TEMPERATURE
MECHANICAL LIFE
PROTECTION CATEGORY
between coil and contacts
between open contacts
between adjacent contacts
≥ 10 · 103 MΩ
- without load: 3600 operations/h
- at rated load: 900 operations/h
– 40 to 40°C
300 · 103 operations
IP 20
3500 V
2000 V
2000 V
CONTACT
SPECIFICATION
COIL
SPECIFICATION
VERSIONS:
AC - alternating current 50 ÷ 60 Hz
DC - direct current
RATED CURRENT
MAXIMUM PEAK CURRENT
RATED VOLTAGE
MAXIMUM SWITCHING VOLTAGE
NOMINAL RATE
AC1:
compensated fluorescent lamps:
uncompensated fluorescent lamps:
incandescence lamps::
halogen lamps:
ELECTRICAL LIFE
STANDARD CONTACT MATERIAL
NOMINAL VOLTAGE UN
RATED POWER CONSUMPTION
OPERATING RANGE
MAXIMUM IMPULSE DURATION
16 A
30 A
250 V AC
400V AC
4000 VA
750 W
1000 W
2000 W
2000 W
≥ 100 · 10
Ag Ni
AC: 8 - 12 - 24 - 48 - 110 - 125 - 230 - 240 V
DC: 12 - 24 - 48 - 60 - 110 V
AC: 5.5 VA
DC: 5 W
AC (50 Hz): (0.85 ÷ 1.1) U
AC (60 Hz): (0.9 ÷ 1.1) UN
DC: (0.9 ÷ 1.1) UN
ACCORDING TO IEC 669
3
operations
230 V AC
230 V AC
230 V AC
230 V AC
N
If the coil works for a prolonged period of time, adaquate ventilation of the relays must be
provided, for example leaving a gap of abent 9mm between them.
AC - DC VERSION DATA (R values relate to +20°C. Tolerance of R and I values: ±10%.)
AC DC
Nominal voltage UN
(V)
8
12
24
48
110
125
230
240
Resistance R
(Ω)
3.5
7
27
105
600
700
2500
2700
Current consumption I at UN (50 Hz)
(mA)
700
450
210
110
45
42
23.5
22
Resistance R
(Ω)
—
27
105
440
2330
—
—
—
Current consumption I at UN
(mA)
—
440
230
110
47
—
—
—
23
Example: A 20 series double phase switch relay with 2 NO contacts, coil rated at 230V AC with Ag Sn O2 contact material.
ORDERING INFORMATION
series
2
022
COIL VERSION
CODE
9
8
OPTION
A
Contact material
0
standard
4
Ag SnO
No. of poles or
sequence number
type
Coil types
DC
Direct current
AC
Alternating current (50/60 Hz)
B0Contact circuit
standard
2
CHARACTERISTIC OF THE CAPACITOR
coil version
(see table)
coil rated voltage
823 0
C0Light and mechanical indicators
standard
option
(see table)
ABCD
400 0
D0Special application
standard
CODE 02600
MATERIAL
TOLERANCE CAPACITY
RATED VOLTAGE
MAX TEMPERATURE
DIELECTRIC STRENGTH
APPROVALS
A capacitor C = 1.5 µF (ordering code 02600) is available if using a maximum of 10
illuminated push-buttons (1.5 mA max, 230 V AC) in the switching input circuit.
This capacitor has to be connected in parallel to the coil of the relay (see diagram).
A1 1 3
C = 1,5 µF
A2 2 4
Sealed version, 7.5 cm insulated and flexible terminals.
metallised polypropylene
± 10%
250 V AC
+ 85 °C
1.6 kV, 50 Hz, 60s, (25 ± 5)°C
32
13
22
705
24
25
Ø 0,8
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