DCNLM LITTELFUSE | Alldatasheet
Document overview
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Technical content
Littelfuse.com © 2022 Littelfuse, Inc. 081122-A
Description
The DCNLM Series 48V High-Current DC Contactor Relay is available up to 400A contact switching capability as well as multiple coil voltage options to suit a wide variety of applications, including use in electrical control systems for communication power supplies, industrial machines, and uninterruptible power supplies (UPS). The DCNLM normally open, high-current DC contactor features 48V non-polarized main contacts and is available in single-coil and double-coil configurations. Web Resources Download 2D print, installation guide and technical resources at: littelfuse.com/DCNLM
Applications
- Communication Power Supplies
- UPS Features and Benefits
- Available up to 400A contact switching capability
- Main contacts are rated for 48V (typical) and 60V (max)
- Coil voltage options include 12V , 24V , 48V , and 60V
- Available in single-coil and double-coil configurations
- Normally open, monostable relay design
- Non-polarized main contacts DCNLM SERIES 60V DC MAX CONTACTOR RELAY DCNLM50 Specifications Max Voltage Rating (V DC): 60 Current Rating Continuous (A): 50, 100, 200, 400 Coil Voltage Rating (V DC): 12, 24, 48, 60 Ingress Protection: IP 40 Operating Temperature (°C): -40ºC to +70ºC Approvals: 400A have CCC, UL Electrical Diagram K DCNLM50NBxx DCNLM200NBxx-01 DCNLM200NB24-02 DCNLM400NBxx DCNLM200 DCNLM100 DCNLM100NBxx-01 DCNLM200NB12xx DCNLM400NB12 DCNLM400NB24-01 DCNLM400NB48-01
Littelfuse.com © 2022 Littelfuse, Inc. 081122-A DCNLM SERIES 60V DC MAX CONTACTOR RELAY
Ordering Information
CURRENT (A) VOLTAGE RATING MOUNTING COIL VOLTAGE (V DC) COIL TYPE AUX CONTACT POLARIZEDSYSTEM NOMINAL (V DC) MAX VOLTAGE (V DC) DCNLM50NB12 50 48 60 SIDE MOUNT 12 Single No No DCNLM50NB24 50 48 60 SIDE MOUNT 24 Single No No DCNLM50NB48 50 48 60 SIDE MOUNT 48 Single No No DCNLM50NB60 50 48 60 SIDE MOUNT 60 Single No No DCNLM100NB12-01 100 48 60 SIDE MOUNT 12 Dual No No DCNLM100NB24-01 100 48 60 SIDE MOUNT 24 Dual No No DCNLM100NB48-01 100 48 60 SIDE MOUNT 48 Dual No No DCNLM200NB12 200 48 60 SIDE MOUNT 12 Dual No No DCNLM200NB24 200 48 60 SIDE MOUNT 24 Dual No No DCNLM200NB48 200 48 60 SIDE MOUNT 48 Dual No No DCNLM200NB12-01 200 48 60 SIDE MOUNT 12 Single No No DCNLM200NB24-01 200 48 60 SIDE MOUNT 24 Single No No DCNLM200NB48-01 200 48 60 SIDE MOUNT 48 Single No No DCNLM200NB24-02 200 48 60 TOP MOUNT 24 Single No No DCNLM400NB24 400 48 60 SIDE MOUNT 24 Single No No DCNLM400NB48 400 48 60 SIDE MOUNT 48 Single No No DCNLM400NB12 400 48 60 SIDE MOUNT 12 Dual No No DCNLM400NB24-01 400 48 60 SIDE MOUNT 24 Dual No No DCNLM400NB48-01 400 48 60 SIDE MOUNT 48 Dual No No LIFE Electrical Life 6000 Cycles Mechanical Life 100,000 OPERATE / RELEASE TIME Close (ms) DCNLM50 40 DCNLM100 30 DCNLM200 50 DCNLM400 50 Release (ms) DCNLM50 20 DCNLM100 30 DCNLM200 25 DCNLM400 25 ENVIRONMENTAL DATA Shock DCNLM50NB DVP 50G, 6ms Vibration 1~50Hz (freq.1~10Hz, amp;.25/f²; freq.10~50Hz, ampl.250/f²) Operating Ambient Temperature -40ºC~+70ºC Weight (g) DCNLM50 157 DCNLM100NBxx-01 193.3 DCNLM200NBxx 445.1 DCNLM200NBxx-0x 439 DCNLM400NBxx 866 DCNLM400NBxx-01 888 COIL DATA Voltage Rating (V DC) 12 24 48 60 Pickup Voltage @ 25˚C (V DC MAX) 8.4 16.8 33.6 42 Dropout Voltage @ 25˚C (V DC MIN) 1 2 4 5 Hold Current (A) DCNLM50 0.71 0.35 0.18 0.13 DCNLM100(D) 0.75 0.35 0.15 / DCNLM200(S) 0.84 0.4 0.21 / DCNLM200(D) 0.7 0.37 0.15 / DCNLM400(S) / 0.39 0.24 / DCNLM400(D) 0.77 0.45 0.1 / Coil Watts @ 25˚C (W) DCNLM50 9 9 9 9 DCNLM100(D) 150/9 150/9 150/9 / DCNLM200(S) 10 10 10.5 / DCNLM200(D) 180/8.5 170/9 180/8 / DCNLM400(S) / 10 11.5 / DCNLM400(D) 80/9.5 175/11 154/5 / MAIN CONTACT Contact Arrangement SPST NO Rated Operating Voltage 48V DC Max Short Circuit Current DCNLM50 200A @ 48V DC DCNLM100 400A @ 48V DC DCNLM200 800A @ 48V DC DCNLM400 1600A @ 48V DC Dielectric Withstand Voltage 1000V AC Insulation Resistence ≥50MΩ @ 500V DC Max Voltage Drop DCNLM50 ≤50mV @ 50 A DCNLM100 ≤80mV @ 100 A DCNLM200, 400 ≤50mV @ 100A
Littelfuse.com © 2022 Littelfuse, Inc. 081122-A DCNLM SERIES 60V DC MAX CONTACTOR RELAY Part Number System DCNLM 200 N B 12 -01 Series Current Main Contacts Polarization and Aux Contact Main Contacts Voltage Coil Voltage (Optional) Special Code MAIN CONTACTS POLARIZATION AND AUX CONTACT POLARIZED? INCLUDE AUX CONTACT? N: No No MAIN CONTACTS VOLTAGE RATING B: 48 V DC COIL VOLTAGE 12: 12 V DC 24: 24 V DC 48: 48 V DC 60: 60 V DC
Littelfuse.com © 2022 Littelfuse, Inc. 081122-A Application Notes & Definitions
- Be sure to use a washer to prevent screws from loosening. Tighten the screw so that the torque is in the range specified below. Exceeding the maximum torque can lead to product rupture. See chart below.
- Please refer to the drawing for connection polarity.
- Do not use dropped products.
- Avoid installing the product in a strong magnetic field (Close to the transformer or magnet), or near an object with heat radiation.
- Electrical life Please use under load capability and life cycle so as not to cause a function failure. (Please also treat the contactor as a product with specified life and replace it when necessary). It is possible to make parts burn around the contactor once operating failure happens. So it is necessary to take layout into account to make sure power shall be cut off within 1 second.
- Do not let particle and oil stain on the main terminal with which the load shall make a reliable contact or it will cause a lot of heat. PRODUCT SERIES PRODUCT MODEL CONTACT TERMINAL COIL TERMINAL MOUNTING HOLE OR BOLT REFERENCE TORQUE HOLE/BOLT/WIRE/TERMINAL REFERENCE TORQUE REFERENCE TORQUE DCNLM50NB DCNLM50NB12 DCNLM50NB24 DCNLM50NB48 DCNLM50NB60 DCNLM100NB DCNLM100NB12-01 DCNLM100NB24-01 DCNLM100NB48-01 DCNLM200NB DCNLM200NB12 DCNLM200NB24 DCNLM200NB12-01 DCNLM200NB24-01 DCNLM200NB48-01 DCNLM200NB24-02 Bolt : M8 9~11N.m Wire - 4~5N.m DCNLM400NB DCNLM400NB24 DCNLM400NB12 DCNLM400NB24-01 DCNLM SERIES 60V DC MAX CONTACTOR RELAY