LR3D21L | Class 20 Bimetal OLR 12 - 18A | Schneider Electric (Square D)
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Brand: Schneider Electric (Square D)SKU: LR3D21L
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$152.82
$78.69
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LR3D21L | Class 20 Bimetal OLR 12 - 18A | Schneider Electric (Square D)

Schneider Electric (Square D) | LR3D21L
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Overview

Details for LR3D21L

Schneider Electric (Square D) LR3D21L: 12A-18A Class 20 Overload RelayThe Schneider Electric (Square D) LR3D21L is a Class 20 overload relay designed for protection in low voltage motor circuits. This relay features an adjustable trip setting from 12A to 18A, providing precise overload protection for motors within this current range. It effectively detects overloads and faults, interrupting the circuit to prevent damage to the motor and associated equipment. The LR3D21L overload relay is constructed with high-quality materials, ensuring durability and reliable operation under demanding conditions. Its rugged design and compact size make it easy to mount and integrate into control panels and motor starters. This relay is suitable for use in various industrial and commercial applications, including motor control centers, pumps, fans, and compressors. The Schneider Electric (Square D) LR3D21L Class 20 Overload Relay offers: Precise overload protection: Adjustable trip setting from 12A to 18A Robust construction: Durable design for reliable operation in demanding environments Easy integration: Compact size for easy mounting in control panels and motor starters Improved safety: Protects motors and equipment from damage caused by overloads and faults our HVAC supply store is your go-to source for high-quality electrical components. We offer the best prices and fast shipping for your products! LR3D21L is a TeSys LRD thermal overload relay from Schneider Electric to be used with a TeSys D contactor. It protects motors 7.5kW@400V thanks to a thermal range 12-18A , a tripping class 20, for use with unbalanced loads. LR3D21L is a TeSys LRD thermal overload relay from Schneider Electric for direct mounting on TeSys D contactors. With a thermal setting range 12-18A and tripping class 20, it protects unbalanced loads and motors 7.5kW@400V. It provides manual test & reset buttons, automatic reset, trip auxiliary contact and flag indicator. Available worldwide, it is multi-standards certified (IEC, UL, CSA, CCC, EAC, Marine) and Green Premium compliant (RoHs/Reach). Thermal overload protection relay, bimetallic type, for use with unbalanced loads (non differential). Direct mounting on the bottom terminals of a Tesys contactor LC1D18-D38 to form a compact starter. Light and compact, 45mm wide. Temperature compensated for a good accuracy of the protection. Manual control with test & reset buttons, manual / automatic reset selector. Trip signaling with 1NO+1NC auxiliary contacts and trip flag indicator. Can be completed with terminal blocks for separate mounting (LAD7B, LAD96) and remote control devices (LAD703, LA7D03).

Specifications

range
TeSys
product name
TeSys LRD;TeSys Deca
Product or Component Type
Non differential thermal overload relay
device short name
LR3D
relay application
Motor protection
Product Compatibility
LC1D25;LC1D18;LC1D32;LC1D38
network type
AC;DC
thermal overload class
Class 20 IEC 60947-4-1
thermal protection adjustment range
12…18 A
[Ui] rated insulation voltage
Power circuit 600 V CSA;Power circuit 600 V UL;Power circuit 690 V IEC 60947-4-1
Network Frequency
0...400 Hz
mounting support
Plate;with specific accessories;Rail;with specific accessories;Under contactor
tripping threshold
1.14 +/- 0.06 Ir IEC 60947-4-1
auxiliary contact composition
1 NO + 1 NC
[Ith] conventional free air thermal current
5 A signalling circuit
permissible current
3 A 120 V AC-15 signalling circuit;0.22 A 125 V DC-13 signalling circuit
[Ue] rated operational voltage
690 V AC 0...400 Hz power circuit IEC 60947-4-1
associated fuse rating
4 A gG signalling circuit;4 A BS signalling circuit
[Uimp] rated impulse withstand voltage
6 kV
phase failure sensitivity
Tripping current 130 % of Ir on two phase;the last one at 0
control type
Red push-button stop;Blue push-button reset
temperature compensation
-4…140 °F (-20…60 °C)
connections - terminals
Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) flexible without cable end;Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) flexible with cable end;Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) solid without cable end;Power circuit screw clamp terminals 1 0.00…0.02 in² (1.5…10 mm²) flexible without cable end;Power circuit screw clamp terminals 1 0.00…0.01 in² (1…4 mm²) flexible with cable end;Power circuit screw clamp terminals 1 0.00…0.01 in² (1…6 mm²) solid without cable end
tightening torque
Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals;Power circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals
Height
2.60 in (66 mm)
Width
1.77 in (45 mm)
Depth
2.99 in (76 mm)
Net Weight
0.32 lb(US) (0.144 kg)
climatic withstand
IACS E10
IP degree of protection
IP20 conforming to IEC 60529
ambient air temperature for operation
-4…140 °F (-20…60 °C) without derating IEC 60947-4-1
Ambient Air Temperature for Storage
-76…158 °F (-60…70 °C)
mechanical robustness
Shocks15 Gn for 11 ms IEC 60068-2-7;Vibrations3 GN IEC 60068-2-6
dielectric strength
1.89 kV 50 Hz IEC 60947-1
Standards
EN/IEC 60947-4-1;EN/IEC 60947-5-1;UL 60947-4-1;UL 60947-5-1;CSA C22.2 No 60947-4-1;CSA C22.2 No 60947-5-1;EN 50495
Product Certifications
IEC;UL;CSA;EAC;ABS;ATEX INERIS;UKCA
Category
22347-CONTACTOR;D-LINE;OVERLOADS-NEW
Discount Schedule
I12
GTIN
3606480609732
Returnability
Yes
Country of origin
TH
Unit Type of Package 1
PCE
Number of Units in Package 1
1
Package 1 Height
3.27 in (8.3 cm)
Package 1 Width
2.83 in (7.2 cm)
Package 1 Length
1.77 in (4.5 cm)
Package 1 Weight
5.08 oz (144.0 g)
Unit Type of Package 2
S02
Number of Units in Package 2
24
Package 2 Height
15.75 in (40 cm)
Package 2 Width
11.81 in (30 cm)
Package 2 Length
5.91 in (15 cm)
Package 2 Weight
10.24 lb(US) (4.645 kg)
Unit Type of Package 3
P12
Number of Units in Package 3
768
Package 3 Height
31.50 in (80 cm)
Package 3 Width
47.24 in (120 cm)
Package 3 Length
29.53 in (75 cm)
Package 3 Weight
350.54 lb(US) (159 kg)
Warranty
18 months

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