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Schneider - 3-pole Thermal Overload Relays

Numéro de référence LRD32
Description 3-pole Thermal Overload Relays
Fabricant Schneider 
Logo Schneider 





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LRD32 fiche technique
www.schneider-electric.com
LRD 01...35
3-pole Thermal Overload Relays
Use in Explosive Atmospheres
e 0080
II (2) GD - Zones 1 - 2, 21 - 22
EC type examination certificate:
INERIS 06ATEX0036X
Description
LRD 21pp
LRD01 to LRD35 3-pole thermal overload relays are designed to protect a.c. circuits
and motors against overloads, phase failure, long starting times and prolonged
stalling of the motor.
1 Adjustment dial Ir.
2 Test button.
Operation of the Test button allows:
- checking of control circuit wiring,
- simulation of relay tripping (actuates both the N/O and N/C contacts).
3 Stop button. Actuates the N/C contact; does not affect the N/O contact.
4 Reset button.
5 Trip indicator.
6 Setting locked by sealing the cover.
7 Selector for manual or automatic reset. Relays LRD 01 to 35 are supplied with the
selector in the manual position, protected by a cover. Deliberate action is required
to move it to the automatic position.
Environment
Conforming to standards
Product certifications
Degree of protection
Protective treatment
Ambient air temperature
around the device
Operating positions
without derating
Shock resistance
Vibration resistance
Dielectric strength at 50 Hz
Surge withstand
Conforming to VDE 0106
Conforming to IEC 60068
Storage
Normal operation,
without derating
(IEC 60947-4-1)
Minimum and maximum
operating temperatures
(with derating)
In relation to normal
vertical mounting plane
Permissible acceleration
conforming to IEC 60068-2-7
Permissible acceleration
conforming to IEC 60068-2-6
Conforming to IEC 60255-5
Conforming to IEC 60801-5
°C
°C
°C
kV
kV
Electrical characteristics of power circuit
Relay type
Tripping class
Conforming to UL 508,
IEC 60947-4-1
Rated insulation voltage (Ui) Conforming to IEC 60947-4-1 V
Conforming to UL, CSA
V
Rated impulse withstand voltage (Uimp)
kV
Frequency limits
Of the operating current
Hz
Setting range
Depending on model
A
Electrical characteristics of auxiliary contacts
Conventional thermal current
A
Maximum sealed current
consumption of the operating
coils of controlled contactors
(Occasional operating cycles
of contact 95-96)
a.c. supply
d.c. supply
V
VA
V
W
Short-circuit protection
By gG or BS fuses
or by circuit-breaker GB2
A
IEC 60947-1, IEC 60947-4-1, NF C 63-650
VDE 0660, BS 4941
CSA, UL, Sichere Trennung, ATEX except LAD 4: UL, CSA.
Protection against direct finger contact IP 2X
“TH”
- 60…+ 70
- 20…+ 60
- 40…+ 70
Any position
15 gn - 11 ms
6 gn
6
6
LRD 01…16,
LR3 D01…D16
10 A
690
600
6
0…400
0,1…13
LRD 21…35,
LR3 D21…D35
10 A
690
600
6
0…400
12…38
5
24 48 110 220 380
100 200 400 600 600
24 48 110 220 440
100 100 50 45 25
5
600
600

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