Main
product range
LT3
name of the device
LT3SA
type of product or equipment
Thermistor Protection Units
[ui] rated insulation voltage
Output control relay: 500 V AC
control circuit voltage [uc]
24...48 V CC
reset
Automatic reset
Complementary
[ue] rated operational voltage
250 V AC 50/60 Hz for output control relay
[ics] rated service breaking capacity
2 A at 24 V DC DC-13
3 A at 250 V AC AC-16
6 A at 120 V AC AC-16
[ith] conventional thermal current
5 A for output control relay
average consumption on hold in w
1W
Handle front plate colour
100 mm
tightening torque
0,8 N.m
[uimp] rated impulse withstand voltage
2,5 kV
terms of use
Probe connection 400 m >1 mm²
Probe connection 500 m >1.5 mm²
average fuel consumption when going
2.5 VA
product weight
0,22 kg
rated power in va
100 VA at 220 V - electrical durability: 500000 cycles
signaling function
Fault
indication Voltage indication
connection mode
Power circuit: box type connector 1 cable(s) 0.75...2.5 mm²flexible with cable end
Power circuit: box type connector 1 cable(s) 0.75...2.5 mm²rigid with cable end cable
cross section Power circuit: box type connector 1 cable(s) 1...2.5 mm²flexible without cable end
Power circuit: box type connector 1 cable(s) 1...2.5 mm²rigid without cable end
Power circuit: box type connector 2 cable(s) 0.75...2.5 mm²flexible with cable end
Power circuit: box type connector 2 cable(s) 0.75...2.5 mm²rigid with cable end cable
cross section Power circuit: box type connector 2 cable(s) 1...2.5 mm²flexible without cable end
Power circuit: box type connector 2 cable(s) 1...2.5 mm²rigid without cable end
control circuit voltage range
0.8 to 1.25 Uc
width (w)
22,5 mm
probe interchangeability
Mark A label conforming to IEC 60034-11
number of probes
0…6
depth
100 mm
resistance
1500…1650 Ohm reset
2700…3100 Ohm trip
maximum resistance to detection of short circuits
20 Ohm
input voltage
< 2.5 V (1500 Ohm) for probe
< 7.5 V (4000 Ohm) for probe conforming to IEC 60034-11
order type
Automatic reset
type and composition of contacts
1 "O" + 1 "F" bi-tension
Environment
ip degree of protection
IP20 conforming to IEC 60529
IP20 conforming to VDE 0106
operating altitude
<= 1500 m without temperature reduction
> 1500…3000 m with temperature reduction
electromagnetic compatibility
Resistance to electrostatic discharge level 3 conforming to IEC 6100-4-11
Resistance to fast transients level 3 conforming to IEC 61000-4-4
Resistance to overvoltage 1.2/50-8/20 level 4 conforming to IEC 61000 -4-5
Disturbance linked to electromagnetic fields level 3 conforming to IEC 61000-4-3
Immunity to micro-breaks and voltage drops conforming to IEC 61000-4-11
operating ambient temperature
-25…60 °C
standards
CEI 60947-8
CEI 60034-11
VDE 0660
room temperature for storage
-40...85 °C conforming to IEC 60068-2-2
-40...85 °C conforming to IEC 60068-2-2
mechanical shock resistance
5 gn 11 ms conforming to IEC 60068-2-27
vibration resistance
1 gn 25...150 Hz conforming to IEC 60068-2-6
2.5 gn 2...25 Hz conforming to IEC 60068-2-6