KEMPPI X5 POWER SOURCE 400 PULSE WP

Kemppi X5 Power Source 400 Pulse WP — Industrial Multi-Process MIG/MAG Power Source with Work Pack

The Kemppi X5 Power Source 400 Pulse WP is an industrial multi-process MIG/MAG power source delivering 400 A at 60% duty cycle. Includes WiseSteel, WiseFusion, and X5 Work Pack Pulse with 54 welding programs pre-installed. Supports Double Pulse, all MAX processes, and WisePenetration. Cobot-capable. 5-year warranty via MyFleet.

What Is the Kemppi X5 Power Source 400 Pulse WP?

The Kemppi X5 Power Source 400 Pulse WP is an industrial-grade multi-process MIG/MAG power source and the production-ready, pre-configured variant of the X5 FastMig 400 Pulse series. It delivers 400 A at a 60% duty cycle and 350 A at 100% continuous duty from a 3-phase 380–460 V supply — and unlike the base 400 Pulse model, it arrives with a comprehensive welding capability pre-installed and ready to use from day one.

The WP designation stands for Work Pack — and it means three key inclusions are pre-loaded at the factory:

• WiseSteel — advanced out-of-position and high-speed steel welding process

• WiseFusion — 25% faster welding with 25% lower heat input than conventional pulse MIG

• X5 Work Pack Pulse — a library of 54 factory-installed welding programs covering synergic and pulse MIG across all common industrial filler materials

This makes the X5 400 Pulse WP the most accessible and immediately productive entry point to the X5 FastMig platform — a fully capable intelligent welding system that requires no additional process or program purchases to begin welding professionally on steel, stainless steel, aluminium, and cored wires.

The X5 400 Pulse WP is a power source only — it pairs with the X5 Wire Feeder HD200 AP/APC or X5 Wire Feeder HD300 AP/APC to form a complete X5 FastMig system. An APC (Advanced Process Control) wire feeder is required to access wireless connectivity, digital WPS (dWPS), and WeldEye ArcVision.

Supporting six welding processes — Double Pulse MIG, Pulse MIG, 1-MIG (synergic), Manual MIG/MAG, DC TIG, MMA (stick), and carbon arc gouging (TIG and MMA not available in robotic configurations) — and compatible with all MAX processes and WisePenetration as purchasable add-ons, the X5 400 Pulse WP is a significant step up from the X3 FastMig platform for operations that need Wise arc intelligence, digital connectivity, and cobot capability.

A 5-year warranty is available through end-user registration in the Kemppi MyFleet service.

Designed and manufactured in Finland. Compliant with IEC 60974-1 and -10.

Key Features of the Kemppi X5 Power Source 400 Pulse WP

400 A Multi-Process Output — 350 A Continuous

The X5 400 Pulse WP delivers 400 A MIG output at 60% duty cycle and sustains 350 A at 100% continuous duty — supporting extended production welding runs on steel, stainless steel, and aluminium without thermal interruption. For MMA welding, maximum output is 400 A at 60% duty cycle and 350 A continuous.

Double Pulse MIG — Pre-Installed and Ready

As a Pulse-tier X5 model, the 400 Pulse WP supports Double Pulse (DPulse) MIG/MAG welding as a standard capability. Double Pulse alternates between two independently configurable pulse cycles, delivering a controlled, low-spatter arc with superior weld bead appearance, improved fusion on heat-sensitive materials, and reduced distortion — particularly effective on aluminium, stainless steel, and high-strength steel.

WiseFusion — Included Pre-Installed

WiseFusion is included as a pre-installed process in the WP configuration. It produces a narrow, energy-dense welding arc that delivers up to 25% lower heat input and enables welding speeds up to 25% faster than conventional MIG/MAG welding — directly improving productivity, reducing distortion, and extending the capability of pulse MIG on stainless steel, aluminium, and precision fabrication applications. No additional purchase or software activation is required.

WiseSteel — Included Pre-Installed

WiseSteel is included as a pre-installed process in the WP configuration. It tackles the challenges of the globular arc range by alternating between short arc and spray transfer modes. In short-circuit transfer, WiseSteel improves arc stability adaptively, providing better out-of-position steel welding performance. In spray transfer mode, micropulsing of current and voltage increases travel speed significantly — improving productivity and quality on high-speed horizontal and overhead steel welds. No additional purchase required.

54 Pre-Installed Welding Programs — Production-Ready From Day One

The included X5 Work Pack Pulse contains 54 factory-installed synergic and pulse MIG programs across all common industrial filler materials from 0.8 mm to 2.0 mm wire diameter. From mild steel to aluminium, stainless steel to silicon bronze, and metal-cored to flux-cored wires — the programs are in the machine before commissioning, eliminating the need for additional work pack purchases to begin welding across the full material range.

WisePenetration — Consistent Arc Penetration Control

The X5 400 Pulse WP is compatible with WisePenetration as a purchasable add-on. WisePenetration actively adjusts wire feed speed to stabilise welding penetration regardless of variation in electrode stick-out length — maintaining consistent arc performance and reducing defect risk on fillet welds, butt welds, and any application where stick-out changes during the weld. Note: WisePenetration is the standard version of this process; WisePenetration+ (which enables Reduced Gap Technology for narrow gap welding on sections up to 30 mm) is available on Pulse+ models only.

All MAX Arc Processes — Compatible as Add-Ons

The X5 400 Pulse WP is compatible with all four MAX arc processes, available as purchasable add-ons:

• MAX Cool — reduced heat-input MIG/MAG for root pass welding, thin sheet, and gap bridging
• MAX Speed — higher travel speed on steel and stainless steel in PA/PB flat and horizontal positions
• MAX Position — improved weld pool control and stability in positional (PF) vertical welding
• MAX Root — controlled root pass welding for consistent first-pass quality

WeldEye ArcVision — Native Industry 4.0 Integration

The X5 FastMig platform includes a native connection to WeldEye welding management software — accessible directly from the welding machine's user interface via an APC wire feeder. X5 FastMig offers a free three-month trial for the WeldEye ArcVision module and Welding Procedures module, including digital WPS functionality. WeldEye ArcVision records welding parameters, arc-on time, and production data in real time, making this information immediately available for quality reporting, productivity analysis, and management review.

Digital WPS (dWPS) — Procedure Compliance at the Machine

With an APC wire feeder, the X5 400 Pulse WP supports digital WPS (dWPS) via WeldEye ArcVision — enforcing approved welding procedure specification limits directly at the welding machine and generating a digital compliance record for every weld. This is essential for fabrication to AS/NZS, ISO, EN, and ASME welding standards where WPS adherence must be demonstrated and auditable.

Cobot-Capable — Ready for Collaborative Robot Integration

The X5 FastMig is cobot-capable, integrating with collaborative robots via a digital connectivity module and the Kemppi Cobotics app. The X5 400 Pulse WP can be used in both manual and cobot-assisted welding configurations — including the WiseFusion and WiseSteel processes included with the WP — providing a future-proof investment for operations evaluating or expanding into automated welding.

Weld Assist — Guided Parameter Setup

Weld Assist guides welders through application-specific welding procedure and parameter selection — shortening the time to productive welding and reducing setup errors across the full process and program library. Combined with the 54 pre-installed Work Pack programs, Weld Assist ensures new operators can begin welding correctly on any supported material without extensive manual configuration.

5-Year Warranty via MyFleet Registration

A 5-year warranty is available through end-user registration in the Kemppi MyFleet fleet management service — extending well beyond the standard 3-year warranty. MyFleet also supports service history tracking, maintenance scheduling, and fleet management for operations running multiple X5 units.

Power Source Only — Requires X5 Wire Feeder AP/APC

The X5 400 Pulse WP is a power source only and requires a compatible X5 Wire Feeder HD200 AP/APC or X5 Wire Feeder HD300 AP/APC. The APC wire feeder variant is required to access wireless connectivity, dWPS, WeldEye ArcVision, and the full WiseFusion and WiseSteel process capabilities. Standard AP feeders support 1-MIG and basic processes but do not enable the full intelligent process library.

Who Is the Kemppi X5 Power Source 400 Pulse WP For?

The X5 Power Source 400 Pulse WP is designed for:

• Industrial fabrication workshops upgrading from X3 FastMig or step-controller MIG systems that need Wise arc intelligence, digital connectivity, and 400 A pulse output in a pre-configured, immediately productive platform
• Steel, stainless, and aluminium fabricators who need WiseFusion and WiseSteel pre-installed with 54 pulse and synergic programs ready to use from commissioning day
• Quality-certified fabrication operations requiring dWPS compliance, WPS enforcement, and digital welding data traceability via WeldEye ArcVision
• Mixed-material production environments welding across mild steel, stainless steel, aluminium, silicon bronze, and cored wires where a complete multi-material program library is needed immediately
• Operations evaluating cobot integration who need a manual/semi-automated capable power source that supports collaborative robot welding with Wise processes included
• Production managers who need real-time welding data, arc-on records, and WPS compliance reporting without manual data capture or additional hardware
• Workshops that want production-ready capability without the additional cost and setup time of purchasing and activating work packs and processes separately

Kemppi X5 Power Source 400 Pulse WP — Technical Specifications

X5 400 Pulse WP — Pre-Installed vs Compatible Processes

X5 400 Pulse WP vs Other X5 Models — Choosing the Right Configuration

Frequently Asked Questions — Kemppi X5 Power Source 400 Pulse WP

What does WP mean on the Kemppi X5 Power Source 400 Pulse WP? WP stands for Work Pack. The WP designation means the power source includes pre-installed welding processes and programs at the factory — specifically WiseSteel, WiseFusion, and the X5 Work Pack Pulse with 54 welding programs. These are immediately usable without any additional purchases, software activations, or setup steps. The base X5 400 Pulse model has no pre-installed processes or programs.

What is the difference between the X5 400 Pulse WP and the X5 400 Pulse+ WP? Both models include WiseFusion, WiseSteel, and the 54-program Work Pack Pulse pre-installed, and share identical physical dimensions and weight. The critical difference is the Pulse+ hardware tier: the 400 Pulse+ WP hardware unlocks compatibility with WiseRoot+, WiseThin+, and WisePenetration+ (including Reduced Gap Technology for narrow gap welding on sections up to 30 mm). These three Pulse+ exclusive processes are not available on the standard 400 Pulse WP regardless of software. If root pass specialist processes, thin sheet specialist processes, or narrow gap welding are required, the Pulse+ WP is the correct choice.

What is the difference between the X5 400 Pulse WP and the X5 500 Pulse+? The 400 Pulse WP delivers 400 A at 60% duty cycle and includes WiseFusion, WiseSteel, and 54 programs pre-installed — offering the best ready-to-go value for operations that don't need maximum output or the Pulse+ exclusive processes. The 500 Pulse+ delivers 500 A at 60% duty cycle with full Pulse+ process compatibility (WiseRoot+, WiseThin+, WisePenetration+), but includes no pre-installed processes or programs — all must be purchased separately. The right choice depends on output requirements, process needs, and whether pre-installed programs or maximum flexibility are the priority.

What welding programs are included in the X5 Work Pack Pulse? The X5 Work Pack Pulse contains 54 programs covering Fe (mild steel solid wire), Ss (stainless steel), AlSi5 and AlMg5 (aluminium), CuSi3 (silicon bronze), Fe Metal (metal-cored), Fe Rutil (rutile flux-cored), and FC-CrNiMo (flux-cored CrNiMo) wires from 0.8 mm to 2.0 mm — across both 1-MIG synergic and Pulse MIG processes for the materials that support pulse.

What is the duty cycle of the X5 Power Source 400 Pulse WP? The X5 400 Pulse WP delivers 400 A MIG output at a 60% duty cycle and sustains 350 A at 100% continuous duty. MMA welding maximum output is 400 A at 60% duty cycle and 350 A continuous.

Is the X5 400 Pulse WP a complete welding system? No. It is a power source only and requires a compatible X5 Wire Feeder HD200 AP/APC or X5 Wire Feeder HD300 AP/APC to form a complete X5 FastMig welding system. For dWPS, WeldEye ArcVision wireless connectivity, and access to the full process library, the APC variant of the wire feeder is required.

Can the X5 400 Pulse WP be used with cobots? Yes. The X5 FastMig is cobot-capable and integrates with collaborative robots via a digital connectivity module and the Kemppi Cobotics app — including the WiseFusion and WiseSteel processes included in the WP configuration.

What is the 5-year warranty on the X5 400 Pulse WP? A 5-year warranty is available by registering the product in the Kemppi MyFleet end-user service. Without MyFleet registration the standard 3-year warranty applies. MyFleet also provides fleet management, maintenance scheduling, and service history tracking.

What is WiseFusion and why is it valuable? WiseFusion is an intelligent arc welding process that produces a narrow, energy-dense arc — delivering welding speeds up to 25% faster and heat input up to 25% lower than conventional pulse MIG. This directly reduces distortion on stainless steel and aluminium, improves fusion on heat-sensitive materials, and increases throughput on production welding. It is included pre-installed on the X5 400 Pulse WP.

What is WiseSteel and when should it be used? WiseSteel is an intelligent arc process that alternates between short arc and spray transfer to handle the challenges of the globular arc range. It provides adaptive arc stability for improved out-of-position steel welding and uses micropulsing in spray mode to increase travel speed significantly. It is included pre-installed on the X5 400 Pulse WP and is particularly effective for high-speed horizontal fillet welding and out-of-position structural steel applications.