| | | |

SCHURTER: Power Dissipation in Power Entry Modules

April 26, 2024

If different electrical components are combined in an appliance inlet to form a power entry module, the individual power losses and temperature deratings of all components involved must be carefully taken into account in order to ensure long-term safe operation.

Power entry modules (PEMs) consist of a combination of different components for the safe power supply of devices. In addition to the IEC appliance inlet connector, mains switches, fuseholders or circuit breakers and filters can be integrated. All these components are tested according to their respective component standard so that the entire component can be certified by the certification bodies.

Each of these components is designed for a specific minimum and maximum ambient temperature. Important: The maximum rated current may only be used at the rated temperature. At higher ambient temperatures, the current must be reduced accordingly. This is usually specified in the temperature derating on the data sheets.

Important_Links_Bar.jpg

White Paper Power Dissipation PEM

Related Articles

Network Infrastructure Featured Product Spotlight

PBUS 14 Panduit logo 400

This webinar presented by Beth Lessard and Keith Cordero will be highlighting three Panduit solutions that will optimize network equipment and cabling to ensure that your spaces are efficiently and properly managed to support ever-evolving business needs of today and beyond. Products that will be featured include PanZone TrueEdge Wall Mount Enclsoure, Cable Managers, and Adjustable Depth 4-Post Rack.

REGISTER HERE

Editor’s Pick: Featured Product News

Siemens: SIMOVAC Non-Arc-Resistant and SIMOVAC-AR Arc-Resistant Motor Controllers

The Siemens SIMOVAC medium-voltage non-arc-resistant and SIMOVAC-AR arc-resistant controllers have a modular design incorporating up to two 12SVC400 (400 A) controllers, housed in a freestanding sheet steel enclosure. Each controller is UL 347 class E2, equipped with three current-limiting fuses, a non-load-break isolating switch, and a fixed-mounted vacuum contactor (plug-in type optional for 12SVC400). The enclosure is designed for front access, allowing the equipment to be located with the rear of the equipment close to a non-combustible wall.

Read More

Sponsored Content
Electrify Your Enterprise

Power is vital to production, and well-designed control cabinets are key. Allied Electronics & Automation offers a comprehensive collection of control cabinet solutions including PLCs, HMIs, contactors, miniature circuit breakers, terminal block connectors, DIN-rail power supplies, pushbutton switches, motor starters, overloads, power relays, industrial Ethernet switches and AC drives engineered to keep your operations running safely, reliably and efficiently.

Learn more HERE.

Products for Panel Builders

  • Omron: S8NR IP67 Power Supply

    Omron: S8NR IP67 Power Supply

    The OMRON S8NR Series is an IP67 rated industrial power supply designed for out of panel installation in harsh environments where dust, moisture, vibration, and accessibility challenges impact reliability. By moving the power supply outside the control panel, S8NR reduces enclosure complexity, electrical labor, and service time while maintaining stable, protected DC power delivery. Read More…

  • Altech Corp.: 85-A STH5 Hinge-Type Terminal Blocks Resist Vibrations and Provide Fast, Safe Access

    Altech Corp.: 85-A STH5 Hinge-Type Terminal Blocks Resist Vibrations and Provide Fast, Safe Access

    In power distribution, heavy-duty machinery and transportation applications, vibrations can weaken a terminal block’s clamping power and loosen wire connections. The resulting power and signal failures can lead to unwanted system downtime, fire and shock risks, or other safety issues. Fortunately, one type of terminal block design makes secure connections possible while also providing easy… Read More…