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LR3D3555 | TeSys D thermal overload relays - 30...40 A - class 20 | Schneider Electric (Square D)
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Details for LR3D3555
LR3D3555 Class 20 Overload Relay: Schneider Electric (Square D)The LR3D3555 is a 40 Amp class 20 thermal overload relay produced by Schneider Electric (Square D). Designed for motor protection, this reliable relay offers precise overload protection for motors rated up to 15 horsepower.
Key Features:
Compact Design: LR3D3555 is remarkably compact, occupying minimal panel space and simplifying installation.
Manual Reset: The manual reset button allows for quick and easy resetting of the relay after a trip, minimizing downtime.
Trip-Free Mechanism: Even when the reset button is held in, the relay will trip if an overload occurs, ensuring superior protection.
Adjustable Trip Setting: Trip current can be easily adjusted to match the specific motor requirements, ensuring optimal protection.
Applications:
The LR3D3555 overload relay finds applications in various industrial settings, including:
Conveyor systems
Pumping systems
Manufacturing machinery
HVAC equipment
Choose our HVAC supply store for the best prices and fast shipping on your electrical supplies! LR3D3555 is a TeSys LRD thermal overload relay from Schneider Electric to be used with a TeSys D contactor. It protects motors 18.5kW@400V thanks to a thermal range 30-40A , a tripping class 20, for use with unbalanced loads. LR3D3555 is a TeSys LRD thermal overload relay from Schneider Electric for direct mounting on TeSys D contactors. With a thermal setting range 30-40A and tripping class 20, it protects unbalanced loads and motors 18.5kW@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 LC1D80 and D95 to form a compact starter. Light and compact, 70mm 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
- LC1D95;LC1D80
- network type
- AC;DC
- thermal overload class
- Class 20 IEC 60947-4-1
- thermal protection adjustment range
- 30…40 A
- [Ui] rated insulation voltage
- Power circuit 1000 V IEC 60947-4-1;Power circuit 600 V CSA;Power circuit 600 V UL
- 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
- [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 IEC 60947-1
- 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
- Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) flexible without cable end;Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) flexible with cable end;Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) solid without cable end;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
- tightening torque
- Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals;Power circuit 79.66 lbf.in (9 N.m) screw clamp terminals
- Width
- 2.95 in (75 mm)
- Depth
- 4.76 in (121 mm)
- Net Weight
- 1.18 lb(US) (0.535 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)
- flame retardance
- V1 conforming to UL 94
- mechanical robustness
- Vibrations6 Gn IEC 60068-2-6;Shocks15 Gn for 11 ms IEC 60068-2-7
- 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;GB/T 14048.4;GB/T 14048.5
- Product Certifications
- IEC;UL;CSA;CCC;EAC;BV;DNV-GL;LROS (Lloyds register of shipping);UKCA
- Category
- 22347-CONTACTOR;D-LINE;OVERLOADS-NEW
- Discount Schedule
- I12
- GTIN
- 3606485335872
- Returnability
- Yes
- Country of origin
- FR
- Unit Type of Package 1
- PCE
- Number of Units in Package 1
- 1
- Package 1 Height
- 3.35 in (8.5 cm)
- Package 1 Width
- 3.07 in (7.8 cm)
- Package 1 Length
- 4.72 in (12.0 cm)
- Package 1 Weight
- 18.66 oz (529.0 g)
- Warranty
- 18 months
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