300AA00042A Danfoss Solenoid Coil 24VDC 350 Bar

Product Overview

The 300AA00042A, 300AA00081A and 300AA00125A are Danfoss Power Solutions / Vickers ToughCoil solenoid coils used for electrically actuated hydraulic cartridge valves and solenoid-operated hydraulic control valves.

These three part numbers are different coil configurations, not interchangeable simply because their external appearance is similar:

• 300AA00042A = MCSC-P-024-D-G0-0-00-10, P Series, 24 VDC
• 300AA00081A = MCSC-J-012-D-G0-0-00-10, J Series, 12 VDC
• 300AA00125A = MCSC-H-115-A-G0-0-00-10, H Series, 115 VAC

Danfoss documentation identifies the P Series as Size 8, 350 bar; the J Series as Size 10/12/16/20, 210 bar; and the H Series as Size 10/12/16/20, 350 bar. These pressure classifications refer to the associated coil/valve platform rather than hydraulic pressure acting directly on the electrical coil itself.

For replacement applications, correct selection requires matching the complete electrical and mechanical configuration, including coil series, voltage, voltage type, connector and valve interface.

For OEM replacement projects, our engineering process focuses on dimensional compatibility, electrical matching and application-specific validation. Each replacement unit can be subjected to 100% simulated operating-condition testing to verify energization stability, thermal behavior and installation compatibility.

Technical Specifications

300AA00042A

• Brand: Danfoss
• Part Number: 300AA00042A
• Model Code: MCSC-P-024-D-G0-0-00-10
• Product Type: Solenoid Coil
• Series: P Series ToughCoil
• Size: Size 8
• Series Pressure Class: 350 bar
• Voltage: 24 VDC
• Voltage Type: D — DC
• Power: 23 W
• Current: 0.96 A at 24 VDC
• Connector: G0 — ISO 4400 / DIN 43650
• Duty Cycle: 100% at up to 110% of rated voltage
• Input Voltage Range: 85%–110% of rated voltage
• Ambient Temperature: Up to 100°C continuous at rated voltage
• Encapsulant: Glass-filled nylon
• Magnet Wire Insulation: UL Class N, 200°C
• Protection: IP65 with G0 connector, subject to mating connector
• Hydraulic Displacement: N/A
• Maximum Shaft Speed: N/A
• Control Method: Electromagnetic actuation

These values are supported by Danfoss’s official product page and ToughCoil technical documentation.

300AA00081A

• Brand: Danfoss / Vickers
• Part Number: 300AA00081A
• Model Code: MCSC-J-012-D-G0-0-00-10
• Product Type: Solenoid Coil
• Series: J Series ToughCoil
• Valve Platform Size: Size 10, 12, 16 or 20
• Series Pressure Class: 210 bar
• Voltage: 12 VDC
• Voltage Type: D — DC
• Power: 23 W
• Current: 1.92 A at 12 VDC
• Connector: G0 — ISO 4400 / DIN 43650
• Duty Cycle: 100% at up to 110% rated voltage
• Input Voltage Range: 85%–110% of rated voltage
• Ambient Temperature: Up to 100°C continuous at rated voltage
• Encapsulant: Glass-filled nylon
• Magnet Wire Insulation: UL Class N, 200°C
• Protection: IP65 with G0 connector, subject to mating connector
• Hydraulic Displacement: N/A
• Maximum Shaft Speed: N/A
• Control Method: Electromagnetic actuation

The official Danfoss product record confirms the 300AA00081A / MCSC-J-012-D-G0-0-00-10 configuration, while the official J Series data defines the electrical performance.

300AA00125A

• Brand: Danfoss / Vickers
• Part Number: 300AA00125A
• Model Code: MCSC-H-115-A-G0-0-00-10
• Product Type: Solenoid Coil
• Series: H Series ToughCoil
• Valve Platform Size: Size 10, 12, 16 or 20
• Series Pressure Class: 350 bar
• Voltage: 115 VAC
• Voltage Type: A — AC with full bridge rectifier
• Power: 29 W
• Current: 0.28 A at 115 VAC
• Connector: G0 — ISO 4400 / DIN 43650
• Duty Cycle: 100% at up to 110% rated voltage
• Input Voltage Range: 85%–110% of rated voltage
• Ambient Temperature: Up to 100°C continuous at rated voltage
• Encapsulant: Glass-filled nylon
• Magnet Wire Insulation: UL Class N, 200°C
• Protection: IP65 with G0 connector, subject to mating connector
• Hydraulic Displacement: N/A
• Maximum Shaft Speed: N/A
• Control Method: AC electromagnetic actuation with full bridge rectification

Danfoss documentation specifies the H Series as a 29 W ToughCoil platform and lists 115 VAC at 0.28 A, while the product record identifies 300AA00125A as MCSC-H-115-A-G0-0-00-10.

Key Technical Advantages

1. Continuous-Duty ToughCoil Construction

Danfoss ToughCoil technology is designed for continuous energized operation, with a 100% duty rating at up to 110% of rated voltage. This is particularly relevant to hydraulic systems where the solenoid must remain energized for extended periods.

2. Glass-Filled Nylon Encapsulation

The specified glass-filled nylon encapsulation provides a robust electrical and mechanical package for mobile and industrial hydraulic environments where vibration, thermal cycling and contamination may occur.

3. High-Temperature Magnet Wire Insulation

The ToughCoil platform uses UL Class N, 200°C magnet-wire insulation. This provides additional thermal margin for energized operation and helps maintain insulation integrity under elevated coil temperatures.

4. Standard DIN 43650 Electrical Interface

The G0 configuration uses the ISO 4400 / DIN 43650 connector family, simplifying wiring, field replacement and service standardization.

5. Clearly Differentiated Series Platforms

The P, J and H series serve different valve-platform requirements:

• P Series: Size 8, 350 bar
• J Series: Size 10/12/16/20, 210 bar
• H Series: Size 10/12/16/20, 350 bar

This makes full model-code verification essential when sourcing replacement coils.

6. Engineering-Focused OEM Replacement

For replacement applications, correct coil selection is based on more than nominal voltage. Dimensional compatibility, valve interface, connector configuration, coil power and voltage type all need to be matched. Our replacement process emphasizes interchangeability verification and 100% simulated operating-condition testing.

Application Areas

Typical applications include:

• Agricultural harvesters
• Refuse haulers
• Mobile hydraulic equipment
• Industrial hydraulic systems
• Screw-in cartridge valve assemblies
• Solenoid-operated hydraulic valves
• Auxiliary hydraulic control circuits
• OEM hydraulic valve service and replacement

Danfoss/Vickers-related application information identifies harvesters, refuse haulers and mobile and industrial hydraulic equipment as representative applications for these ToughCoil products.

Expert Maintenance Tips

Verify the Complete Coil Code

Always match the complete model configuration rather than selecting based on appearance alone.

Examples:

• 300AA00042A = MCSC-P-024-D-G0-0-00-10
• 300AA00081A = MCSC-J-012-D-G0-0-00-10
• 300AA00125A = MCSC-H-115-A-G0-0-00-10

Do Not Mix AC and DC Configurations

The 300AA00125A is a 115 VAC Type A coil with full bridge rectification, while 300AA00042A and 300AA00081A are DC configurations. Mechanical fit alone is not sufficient for electrical replacement.

Check the Connector and Sealing

The actual environmental protection level of the G0 configuration depends on the mating connector. Inspect the plug, seal and cable-entry area before commissioning the replacement coil.

Keep Supply Voltage Within Specification

The specified operating range is 85%–110% of rated voltage. Excessive supply voltage can increase coil heating and reduce long-term reliability.

Inspect the Valve, Not Just the Coil

A hydraulic valve that fails to shift is not necessarily suffering from a failed coil. Check supply voltage, electrical connections, valve spool condition, contamination, spring return and cartridge mechanical movement before replacing electrical components.

300AA00182A