Siemens 3RV2042-4YA10 Motor Protection Circuit Breaker 3P 75-93A 100kA

The Siemens 3RV2042-4YA10 is a SIRIUS 3RV2 size S3 motor protection circuit breaker with adjustable thermal overload release of 75 to 93 A and CLASS 10 trip class. Its magnetic short-circuit release responds at 1,300 A, and the unit delivers an increased breaking capacity (Icu) of 100 kA at 240 V and 400 V. Screw-type terminals with top and bottom connections are standard.

Technical specifications:

• MLFB: 3RV2042-4YA10
• Manufacturer: Siemens
• Product line: SIRIUS
• Size: S3, 3-pole
• Rated continuous current: 93 A
• Adjustable overload release: 75...93 A, CLASS 10 thermal
• Magnetic short-circuit trip: 1,300 A
• Rated voltage: 20...690 V AC
• Operating frequency: 50...60 Hz
• Breaking capacity (Icu): 100 kA at 240/400 V, 10 kA at 500 V, 6 kA at 690 V
• Operating capacity (Ics) at 400 V: 50 kA
• Operating power (AC-3): 45 kW at 400 V, 90 kW at 690 V
• Power loss at rated current: 39 W (13 W per pole)
• IP rating (front): IP20 per IEC 60529
• Ambient temperature (operation): -20...+60 °C
• Terminals: Screw-type, 2.5...50 mm² (stranded), AWG 10...2; tightening torque 4.5...6 Nm
• Dimensions (WxHxD): 70 x 165 x 176 mm
• Weight: 2.279 kg
• Mounting: Screw and snap-on, 35 mm DIN rail per DIN EN 60715
• Mechanical and electrical endurance: 25,000 operating cycles
• ATEX: DMT 02 ATEX F 001, Ex II (2) GD

Features and benefits:

• Increased breaking capacity of 100 kA at 400 V handles high prospective fault currents without additional fusing
• Integrated disconnector functionality eliminates the need for a separate isolating switch
• Built-in phase failure detection guards against unbalanced motor operation
• ATEX Ex II (2) GD certification permits deployment in potentially explosive atmospheres
• Suitable for safety-related switching OFF, supporting functional safety applications

Applications:

• Protection of 3-phase motors up to 90 kW at 690 V in industrial plant
• Motor feeder circuits in high-fault-current switchgear assemblies
• Hazardous-area motor starters in ATEX Ex II (2) GD classified zones
• Pump, compressor, and fan drives in process industry control panels

Compliant with IEC 60529 (IP rating), IEC 60068-2-27 (shock resistance), IEC 60715 (DIN rail), and ATEX directive 2014/34/EU. Part of the Siemens SIRIUS 3RV2 range.

Also known as: Siemens 3RV2042-4YA10, SIRIUS 3RV2 S3 motor circuit breaker 93A.