Pfannenberg PF 42500 230V EMC IP55 EMC Filterfan

PF 42500 230V EMC IP55 filterfan: decoded article 11842103055

The PF 42500 230V EMC IP55 is a installation size 4 EMC filterfan with fluted filter and UV-resistant cover from Pfannenberg, intended to move cabinet-external air through a filter mat and into an electrical enclosure. It is built into a door or side panel cut-out and removes heat by exchanging the warm enclosure air for cooler ambient air, so it only works when the surrounding air is cooler than the maximum acceptable temperature inside the cabinet.

The model name decodes as follows: PF is the filterfan family, 42500 identifies installation size 4 (the cut-out and airflow class), 230 V AC is the supply voltage and IP55 is the protection class of the filterfan face. The full order number for this exact variant is 11842103055. This article combines three properties: installation size 4, a stainless-steel EMC screen and the IP55 fluted filter with UV-resistant cover.

Technical specifications of the PF 42500 230V EMC IP55

Values are from the product page for article 11842103055. Shielding attenuation values are not stated on the page.

How the PF 42500 230V EMC filterfan works

At 145 to 160 m³/h free flow it covers the same airflow class as the plain PF 42500 but adds the EMC function, and it consumes only 17 to 18 W.

In the PF 42500 230V EMC IP55, air enters through the louvred front cover, passes through the filter mat and is pushed into the enclosure by a single axial fan. Warm air leaves the cabinet through a second opening, usually fitted with a matching exhaust filter, so that dust cannot enter through the outlet either. The louvres are shaped to give a high airflow for the size of the housing and to keep splash water and falling debris away from the filter mat.

Because the PF 42500 230V EMC IP55 only moves air, the achievable cooling depends on the temperature difference between the inside and the outside of the enclosure and on the pressure drop of the filters and any rainhood. A thermostat is normally used to switch the fan on at a set cabinet temperature, which saves power and extends filter life.

Fit in the system and related Pfannenberg parts

The screen grid uses improved contact springs, giving secure metallic contact to the cut-out. The cut-out of 223 mm x 224 mm is compatible with size-4 filterfans of the third and fourth generation.

The same family covers installation sizes 1 to 6, with sibling models such as PF 11000, PF 22000, PF 32000, PF 42500, PF 43000, PF 65000 and the slim PF 67000 SL. The exhaust counterpart carries the PFA prefix and shares the cut-out, so a filterfan and an exhaust filter of the same size can be combined for forced circulation.

• EMC exhaust filter: article 11940001055
• Spare filter mats, pack of 5, IP55: article 18611600036
• Thermostat: article 17121000000; hygrostat: article 17207000000
• Rainhood in stainless steel: article 18102000017

Selection and ordering checklist for the PF 42500 230V EMC IP55

Before ordering the PF 42500 230V EMC IP55, confirm that the following points are settled so the correct variant is quoted:

• Cabinet heat load in watts and the permitted internal temperature
• Highest outdoor or room air temperature; a filterfan only cools when ambient is below the enclosure limit
• Supply: 230 V AC; other voltages carry other article numbers
• Cut-out of 223 mm x 224 mm and the installation depth behind the panel
• EMC requirement of the cabinet and whether an IP55 fluted filter is needed on the site

A 230 V AC EMC filterfan is a sensible option for cabinets with variable-speed drives where radiated emissions must stay inside the enclosure but the heat must still leave.

Installation, commissioning and maintenance of the PF 42500 230V EMC IP55

Installing the PF 42500 230V EMC IP55 uses a cut-out in the cabinet wall and the tool-free four-corner fastening of the Pfannenberg filterfan. A poured foam seal on the frame is pressed against the panel, which keeps the stated protection class intact without a separate gasket. Mount the fan so that the airflow is from outside to inside and place the exhaust outlet as far from the inlet as practical, ideally at the opposite side and higher up, so warm air rises out of the enclosure.

Connect the PF 42500 230V EMC IP55 supply with the fuse stated in the data table and protect the circuit as described in the manual. For commissioning, run the fan for several minutes and confirm direction of air movement at the louvres, then check the enclosure temperature under real load.

• Inspect the filter mat at each service visit and replace it when visibly loaded; spare mats come in packs of five
• Verify that the exhaust opening is clear and that cables do not obstruct the louvres
• Verify the EMC screen contacts after changing the filter and make sure the cabinet paint has been removed under the contact areas

The IP55 fluted filter has a bigger surface, which helps when airborne dust is heavier than a clean electrical room, for example in plant halls near cement, desalination or petrochemical operations.

Typical applications in Oman and the GCC

Typical uses are VFD panels, soft-starter panels and PLC cabinets in drive rooms and equipment containers where both cooling and shielding matter.

Across the region, filterfans are used on control panels in oil and gas facilities, power stations and substations, desalination plants and petrochemical sites, where cabinets sit in electrical rooms or outdoor kiosks. Ambient temperatures above +40 °C for much of the year, fine sand and high humidity near the coast mean that the filter mat class, the protection class and the thermal margin should be checked rather than assumed. Where outdoor ambient air can approach the allowed enclosure temperature, a cooling unit or heat exchanger is the better choice than a filterfan.

Variants and voltages in the family of the PF 42500 230V EMC IP55

The table lists the article numbers shown by the manufacturer for the same size, so you can see which variants exist around the one requested.

Information to send with an RFQ for the PF 42500 230V EMC IP55

A complete request avoids delays. Please provide:

• Part number or article number, for example PF 42500 230V EMC IP55 / 11842103055
• Quantity and whether exhaust filters, spare filter mats, thermostat or rainhood are needed
• Supply voltage and frequency available at the cabinet
• Maximum ambient temperature and the heat load to be removed, if you want a sizing opinion
• Site conditions: indoor room, outdoor kiosk, sand, oil mist or salt air
• Delivery destination in Oman or the GCC and required date

Documents and quotation

A product sheet for the PF 42500 230V EMC IP55 series is attached on this page, and it shows the airflow data, article numbers for every voltage, accessory article numbers and the performance curves for the size.

To receive a quotation for the PF 42500 230V EMC IP55, send us the part number, the quantity and the delivery destination in Oman or the GCC. Seven Star LLC is an independent supplier based in Muscat and confirms lead time and availability against each request.