AZSR143
ZETTLER
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50 AMP MINIATURE POWER RELAY
Arrangement SPST-N.O. (1 Form A)
Ratings (max.)
switched power
switched current
continuous current
switched voltage
(resistive load)
13850 VA
50 A
50 A
277 VAC
Rated Loads
UL/CUR/TÜV/CQC
43 A at 277 VAC, resistive, 85°C, 30k cycles
33 A at 277 VAC, resistive, 105°C, 30k cycles
50 A at 277 VAC, resistive, 85°C, 6k cycles
20 A at 277 VAC on, carry 50A, 20A 277VAC
off, resistive, 85°C, 50k cycles
Contact material AgSnO
2
(silver tin oxide)
Contact gap
standard version
option (103) version
1.8 mm
2.0 mm
Contact resistance
initial
typical
(load contact)
≤ 100 mΩ
< 3 mΩ
CONTACTS
Life Expectancy
mechanical
electrical
(minimum operations)
1 x 10
5
see UL/CUR/TÜV/CQC ratings
Operate Time 20 ms (max.) at nominal coil voltage
Release Time
10 ms (max.) at nominal coil voltage, without
coil suppression
Dielectric Strength
coil to load contacts
open load contacts
(at sea level for 1 min.)
4500 V
RMS
2500 V
RMS
Surge Voltage 10kV @1.2/50µs (coil to contacts)
Insulation Resistance 1000 MΩ (min.) at 23°C, 500 VDC, 50% RH
Temperature Range
operating
(at nominal coil voltage)
-40°C (-40°F) to 85°C (185°F)
Vibration resistance 0.062" (1.5 mm) DA at 10–55 Hz
Enclosure
protection category
material group
flammability
P.B.T. polyester
RT II, flux proof
IIIa
UL94 V-0
Terminals Tinned copper alloy, P. C.
Soldering
max. temperature
max. time
270 °C
5 s
Dimensions
length
width
height
35.0 mm (1.38”)
16.0 mm (0.63”)
27.9 mm (1.10”)
Weight 25 grams (approx.)
Compliance UL 508, IEC 61810-1, RoHS, REACH
Packing unit in pcs 50 per plastic tray / 500 per carton box
Shock 20 g
GENERAL DATA
FEATURES
· 50 Amp switching capability
· Contact gap: 1.8mm standard / 2.0mm available
· Dielectric strength 4.5 kV
RMS
· 10kV Surge
· UL class F insulation
· UL / CUR E365652
· TÜV B0887930015
· CQC 19002227975
Nominal coil DC voltages
5, 9, 12, 18, 24, 48
Coil power
nominal
holding power
at pickup voltage
(at 23 °C)
1.6 W
196 mW
900 mW
Temperature Rise 70 K (126°F) at nom. coil voltage, 85°C
Max. temperature Class F insulation - 155°C (311°F)
Holding voltage > 35% of nominal coil voltage
Dropout voltage > 5% of nominal coil voltage
COIL
AZSR143
ZETTLER
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PC BOARD LAYOUT
Viewed towards terminals. Dimensions in mm.
Dimensions in mm. Tolerance: ±0.3mm
MECHANICAL DATA
WIRING DIAGRAMS
Viewed towards terminals
NOTES
1. All values at 23°C (73°F).
2. Relay may pull in with less than “Must Operate” value.
3. Provide sufficient PCB cross section as heat spreader on terminals.
4. Specifications subject to change without notice.
COIL VOLTAGE SPECIFICATIONS
Nominal Coil
VDC
Must Operate
VDC
Min. Holding
VDC
Max. Cont.
VDC
Resistance
Ohm ± 10%
12 9.0 4.2 14.4 90.0
18 13.5 6.3 21.6 202.5
9 6.75 3.15 10.8 50.5
5 3.75 1.75 6.0 15.5
24 18.0 8.4 28.8 360.0
48 36.0 16.8 57.6 1440
Note: All values at 23°C (73°F), upright position, terminals downward.
Example ordering data
AZSR143-1AE-24D 24 VDC nominal coil voltage, 1.8 mm contact gap
AZSR143-1AE-24D(103) 24 VDC nominal coil voltage, 2.0 mm contact gap
ORDERING DATA
AZSR143-1AE- ccDccc
Options
nil: standard version
(103): 2.0 mm contact gap version
Nominal coil voltage
see coil voltage specifications table