Documentation & Downloads
Schneider Electric LRD3361 TeSys Deca Thermal Overload Relay, 55-70 A, Class 10A
- MPN: LRD3361
- PPN: SCH-LRD3361
CAD
$266.09
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Description
TeSys LRD thermal overload relay, 70A/1000V, thermal setting range 55-70A, tripping class 10A, for protection of 3-phase motors 37kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector acting also as reset button, a trip test button for simulation of a tripping, a stop button, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1D80-D95. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LA7D3064 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), Green Premium compliant (RoHs/Reach).
Features
- The LRD3361 features integrated phase imbalance and power loss detection to trigger a trip before high temperatures can permanently damage your motor windings. This proactive protection significantly extends the lifespan of your heavy-duty equipment and prevents the costly downtime associated with motor rewinding or replacement.
- This relay features a precise adjustment dial that allows you to match the trip current exactly to your motor's nameplate rating within the 55A to 70A range. This level of granularity ensures your 37kW to 45kW motors operate at peak efficiency without the risk of nuisance tripping or under-protection.
- Designed for seamless integration, the LRD3361 mounts directly beneath LC1D80 and LC1D95 contactors using EverLink™ power terminal blocks. This direct-connect architecture reduces installation time, eliminates extra wiring labor, and creates a compact, vibration-resistant motor starter assembly perfect for crowded industrial control panels.
- Featuring a selectable reset mode (Manual or Automatic) and a dedicated stop/test button, this unit allows maintenance teams to quickly diagnose faults and verify circuit integrity. The blue reset plunger and red stop button provide clear tactile feedback, ensuring your facility can safely return to production as soon as the thermal fault is cleared.
Documentation & Downloads
Specifications
Additional
- Current Range
- 55-70 A
- Phase Failure Sensitivity
- Tripping current 130% of Ir on two phase, the last one at 0
- Thermal Overload Class
- Class 10A IEC 60947-4-1
- Tripping Threshold
- 1.14 ± 0.06 Ir IEC 60947-4-1
- Temperature Compensation Range
- -20 to 60 °C
- Dielectric Strength
- 2.2 kV 50 Hz IEC 60947-1
- IP Degree of Protection
- IP20 IEC 60529
- Height
- 81 mm
- Net Weight
- 0.51 kg
- Tightening Torque
- Control circuit 1.7 N.m, Power circuit 9 N.m screw clamp terminals
- Auxiliary Contacts
- 1 NO + 1 NC
- Vibrations
- 6 Gn IEC 60068-2-6
- Flame Retardance
- V1 UL 94
- Product Certifications
- IEC, UL, CSA, CCC, EAC, ATEX, INERIS, UKCA
- Temperature Operating Range
- -20 to 60 °C without derating IEC 60947-4-1
- Toxic Heavy Metal Free
- Yes
- REACH Compliant
- Yes
- Sustainable Offer Status
- Green Premium
Rated Operational Voltage1000 V AC 0...400 Hz power circuit IEC 60947-4-1
Network TypeDC, AC
Motor Power37 kW @ 400 V
Thermal Protection Adjustment Range55-70 A
Insulation VoltagePower circuit 1000 V IEC 60947-4-1, 600 V CSA, 600 V UL
Network Frequency0-400 Hz
Width70 mm
Depth115 mm
Terminal Wire SizePower circuit 4-35 mm², Control circuit 1-2.5 mm²
Mounting SupportPlate, rail with accessories, under contactor
Control TypeRed push-button stop, Blue push-button reset
Shocks15 Gn for 11 ms IEC 60068-2-7
Thermal Overload Relay TypeDifferential thermal overload relay
Standards ComplianceIEC 60947-4-1, 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, EN 50495
Temperature Storage Range-60 to 70 °C
RoHS CompliantYes
Mercury FreeYes
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CAD
$266.09
/ EA
Available to Order
Available to Ship Same/Next Business Day if In Stock and Ordered before 12:00 PM EST
Company Stock:
0
Looking to buy a large quantity?
To view product inventory
CAD$266.09/ EA
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