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title: "Wallbox Pulsar Pro 3 & EM4: Scalable 22kW Commercial EV Chargers"
description: "Prevent main breaker overloads with Wallbox Pulsar Pro 3 & EM4 dual-socket chargers. Check stock availability in your personal account."
type: information-resource

---

# ESTG

# Scalable 22kW charging infrastructure with Wallbox Pulsar Pro and EM4

As commercial fleets, multi-family developments, and workplace parking areas transition to electric mobility, demand for high-capacity, reliable charging hardware accelerates. Business premises and commercial parking plazas require robust hardware that prevents main breaker overloads while maintaining maximum site availability. The **Wallbox Pulsar Pro (22kW)** and **Wallbox EM4** deliver the technical performance, physical durability, and smart connectivity required for modern European B2B deployments.

## How do Wallbox Pulsar Pro and EM4 prevent main breaker tripping?

Wallbox commercial chargers utilize integrated Dynamic Load Balancing to continuously monitor total building energy demand. When site electricity consumption spikes, the chargers automatically throttle power output to prevent main fuse overloads. Once building load decreases, full charging speeds restore automatically, ensuring continuous operation without network disruptions.

![Newsslider item - ESTGeu (5)](https://a.storyblok.com/f/288569/467x300/edafb0c614/newsslider-item-estg-eu-5.png)

## Hardware breakdown: Wallbox Pulsar Pro vs Wallbox EM4

Selecting the right charging station depends directly on site architecture, vehicle throughput, and redundancy requirements. Both models feature an impact-resistant IK10 housing and Type 2 shuttered sockets for maximum physical protection in harsh weather conditions.

### Wallbox Pulsar Pro(22kW): Single-socket reliability

Engineered for single-vehicle charging bays, workplace spots, and high-end residential setups, the **Wallbox Pulsar Pro** delivers up to 22kW three-phase power. Built for heavy-duty commercial deployment, it boasts an exceptionally low **downtime rate of just 0.02%**. This unmatched operational reliability prevents unnecessary service calls and protects project margins for installers and operators.

### Wallbox EM4: Dual-socket modular powerhouse

Designed specifically for commercial parking plazas, fleet hubs, and residential complexes, the **Wallbox EM4** features two independent sockets in a single compact housing. This dual-station setup doubles charging capacity per footprint. Because each socket operates on an independent circuit, a cable fault on one side leaves the second charging point fully operational. Furthermore, its **fast-swappable modular design** enables quick component replacement on-site without dismantling the entire station.



## Primary technical advantages per Wallbox mode

- **Maximum Operational Uptime (Pulsar Pro):** Industry-leading 0.02% downtime rate ensures maximum reliability and minimizes maintenance overhead.
- **Dual Independent Circuits (EM4):** Provides complete circuit redundancy, system disruptions on one socket do not affect the second charging point.
- **Fast-Swappable Modular Maintenance (EM4):** Modules can be replaced individually on-site to drastically reduce service time and lower Total Cost of Ownership (TCO).
- **Integrated Dynamic Load Balancing (Both Models):** Automatically adjusts charge rates to match real-time site capacity, preventing power outages during peak hours.
- **Native 4G Connectivity & OCPP 1.6J (Both Models):** Ready for instant cloud commissioning out-of-the-box without relying on local Wi-Fi or complex network cabling.

Ensure your upcoming European charging projects are engineered for maximum reliability, uptime, and long-term scalability.





- [Check stock availability for Wallbox](/en-gb/brands/wallbox)