"ABB NSL44ES-81 control relay with 4NO/4NC contacts, 24VDC operation, and spring-term design. Suitable for industrial control systems, ensuring reliable and efficient operation."
Product ModelNSL44ES-81
Material Number1SBH103004R8144
Product ID70009
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Reliable OperationThe ABB NSL44ES-81 control relay is designed with a spring-term mechanism, ensuring consistent and reliable operation in industrial settings.
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2. Versatile ContactsEquipped with 4NO (Normally Open) and 4NC (Normally Closed) contacts, this relay provides flexibility in circuit configurations, making it suitable for a variety of applications.
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3. Efficient ControlOperating at 24VDC, the NSL44ES-81 offers efficient control and power management, reducing energy consumption and enhancing overall system performance.
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4. Compact DesignWith dimensions optimized for space-saving, the NSL44ES-81 is ideal for use in compact control panels and systems where space is limited.
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Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Product Net Width
45 mm
Product Net Depth / Length
110.7 mm
Product Net Height
68 mm
Product Net Weight
0.32 kg
Number of Auxiliary Contacts NO
4
Number of Auxiliary Contacts NC
4
5. High Current RatingThe relay supports a high current rating of 3A, making it suitable for handling heavy loads and ensuring smooth operation in demanding industrial environments.
Standards
IEC 60947-5-1 and EN 60947-5-1, UL 508, CSA C22.2 N°14
Rated Operational Voltage
Auxiliary Circuit 690 V Main Circuit 690 V
Rated Frequency (f)
Auxiliary Circuit 50 / 60 Hz
Conventional Free-air Thermal Current (Ith)
acc. to IEC 60947-5-1, Π= 40 °C 10 A
Rated Operational Current AC-15 (Ie)
(500 V) NC 2 (500 V) 2 A (690 V) 2 A (24 / 127 V) 6 A (220 / 240 V) 4 A (400 / 440 V) 3 A
Rated Short-time Withstand Current Low Voltage (Icw)
for 0.1 s 140 A for 1 s 100 A
Maximum Electrical Switching Frequency
(AC-15) 1200 cycles per hour (DC-13) 900 cycles per hour
Rated Operational Current DC-13 (Ie)
(24 V) 6 A / 144 W (48 V) 2.8 A / 134 W (72 V) 1 A / 72 W (110 V) 0.55 A / 60 W (125 V) 0.55 A / 69 W (220 V) 0.27 A / 60 W (250 V) 0.27 A / 68 W
Rated Insulation Voltage (Ui)
acc. to IEC 60947-5-1 and VDE 0110 (Gr. C) 690 V acc. to UL/CSA 600 V
Rated Impulse Withstand Voltage (Uimp)
Auxiliary Circuit 6 kV
Maximum Mechanical Switching Frequency
3600 cycles per hour
Rated Control Circuit Voltage (Uc)
DC Operation 24 V
Operate Time
Between Coil De-energization and NC Contact Closing 15 ... 20 ms Between Coil De-energization and NO Contact Opening 13 ... 17 ms Between Coil Energization and NC Contact Opening 31 ... 53 ms Between Coil Energization and NO Contact Closing 36 ... 59 ms
acc. to IEC 60529, IEC 60947-1, EN 60529 Auxiliary Terminals IP20 acc. to IEC 60529, IEC 60947-1, EN 60529 Coil Terminals IP20
Terminal Type
Spring Terminals
Ambient Air Temperature
Close to Contactor for Storage -60 ... +80 °C Near Contactor for Operation in Free Air -40 ... 70 °C
Climatic Withstand
Category B according to IEC 60947-1 Annex Q
Maximum Operating Altitude Permissible
Without Derating 3000 m
Resistance to Shock acc. to IEC 60068-2-27
Closed, Shock Direction: A 20 g Closed, Shock Direction: B1 15 g Closed, Shock Direction: C1 19 g Closed, Shock Direction: C2 14 g Open, Shock Direction: A 10 g Open, Shock Direction: B1 5 g Open, Shock Direction: C1 8 g Open, Shock Direction: C2 8 g Shock Direction: B2 10 g
Resistance to Vibrations
3g Closed Position & 2g Open Position 5 ... 300 Hz
Object Classification Code
K
ETIM 7
EC000196 - Contactor relay
ETIM 8
EC000196 - Contactor relay
ETIM 9
EC000196 - Contactor relay
eClass
V11.0 : 27371001
UNSPSC
39121529
IDEA Granular Category Code (IGCC)
4763 >> Power contactor, DC switching
Manufacturer ID
1SBH103004R8144
ABB NSL44ES-81 Control Relay - 4NO/4NC, 24VDC | INDSLT
