Key facts
- Brand
- Kemppi
- Model
- KMS 300
- Documents
- 11
- Languages
- RU · NO · EN · DA · ZH · NL · PL · FR · IT · ES
- Last added
- 2026-10-12
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Kemppi KMS 300/400/500 Welding Power Source Operating Manual
This document is the operating manual for the Kemppi KMS 300, 400, and 500 welding power sources. It provides instructions for the safe use, installation, and maintenance of these multifunctional DC welding machines designed for professional MMA and MIG welding applications. The manual includes detailed information on connecting the equipment, using the remote control, and troubleshooting common issues.
Read onlineKemppi KMS 300 specifications
| Intended Application | Professional welding production |
|---|---|
| Network Voltage Range | 360 V – 440 V |
| Cable Cross-Section (KMS 300) | 50 – 70 mm² |
| Cable Cross-Section (KMS 400) | 70 – 90 mm² |
| Cable Cross-Section (KMS 500) | 70 – 90 mm² |
All Kemppi KMS 300 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
- Kemppi FastMig KMS 300, 400, 500 Operating Manual 14 p
- Kemppi KMS 300/400/500 Welding Power Source Operating Manual 16 p
- Kemppi FastMig KMS 300 400 500 Operating Manual 14 p
- Kemppi KMS 300/400/500 Operating Manual 14 p
- Kemppi KMS 300, 400, 500 Welding Machine User Manual 14 p
- Kemppi FastMig KMS 300, 400, 500 Operating Manual 14 p
- Kemppi KMS 300, 400, 500 Welding Power Source Operation Manual 14 p
- Kemppi FastMig KMS 300, 400, 500 Operating Manual 14 p
- Kemppi FastMig KMS 300, 400, 500 Welding Machine Operating Manual 13 p
- Kemppi FastMig KMS 300, 400, 500 Operating Manual 14 p
- Kemppi FastMig KMS 300, 400, 500 User Manual 14 p
Questions answered in these manuals
What is the recommended cable cross-section for the FastMig KMS 300?
The recommended copper cable cross-section is 50 – 70 mm².
What is the power supply requirement for the Kemppi KMS series?
The KMS power sources must be connected to a 400V 3-phase power supply.
From: Kemppi KMS 300/400/500 Welding Power Source Operating Manual
Can the remote control be used for MMA welding?
Yes, the remote control can also be used to set the MMA current.
From: Kemppi KMS 300/400/500 Welding Power Source Operating Manual
What is the voltage range for the KMS 300?
The voltage range is 360 V – 440 V.
How do I connect the power source to the electrical network?
Connect using a 5-meter power cable; if not compliant with local standards, replace it. A qualified electrician must install the plug.
What is the protection class of the machine?
The machine has a protection class of IP23S, which allows for outdoor protection and storage but not use in rain.