Widap AG produces power resistors, electrical components and electrical systems and develops solutions for railway technology.
Widap AG
Schmitten · Diessenhofen · Hirschthal · Dachau · CastellanzaNew on Amplifa
About Widap
Widap AG, headquartered in Schmitten (Switzerland), produces and sells power resistors and load banks, develops customised solutions for railway technology, and produces reactive power compensation systems (conventional and dynamic) as well as harmonic filters (active and passive). The portfolio also includes a broad range of electrical components such as switch disconnectors, changeover switches, fuses, energy meters, motor protection filters and busbar systems, as well as electrical systems and apparatus. In resistor technology, the company manufactures open-wound wire resistors (spiral, tube, frame and sliding resistors), cemented wire resistors, cast and steel grid resistors, and PTC heaters. The motor protection switches (Type 40, TP10) are produced in Switzerland and are distinguished by robustness and durability. The group is present with locations in Switzerland, Germany and Italy.
- Site
- Schmitten
- Processes
- Manufacture of power resistors (wire resistors: spiral, tube, frame,, Manufacture of motor protection switches (Type 40, TP10) with star-delta changeover, Production of custom circuits (manual star-delta circuits, reversing circuits), Manufacture of PTC heaters (fan heaters for passenger coaches), Construction of electrical systems and apparatus (reactive power compensation systems, harmonic
- Materials
- Steel carrier rail promat galvanised, blue passivated, Ceramic (resistor body/rider), CuNi44 (resistance material), CuNi wire, CrNi wire, Aluminium die casting, Aluminium (frame resistor carrier, housing), Special resistance strip (edge-rolled)
- Industries
- Railway technology, Electrical engineering, Energy supply, Mechanical engineering, Agriculture
- 01
Engineering and design
- 02
Winding of resistor elements (special resistance strip, CuNi/CrNi wire)
- 03
Assembly on steel carrier rails or aluminium/ceramic carriers
- 04
Galvanising/passivation of carrier rails (purchased externally), painting and
- 05
Electrical systems construction (compensation systems, filters, load banks)
- 06
Sales and customer service incl. repair service
Materials and Processes
CuNi44 (resistance material)
Resistance material for sliding resistors on ceramic carrier KER 410.
CuNi wire
Winding wire for tube resistors FW and sliding resistors.
CrNi wire
Winding wire for tube resistors FW as an alternative to CuNi.
Ceramic
Resistor bodies and riders for wire and sliding resistors.
Steel carrier rail (promat galvanised, blue passivated)
Carrier for spiral resistors ZO with edge-rolled special resistance strip.
Aluminium die casting
Water-splash-proof, robust light-metal housing for motor protection switch Type 40.
Aluminium carrier
Carrier for frame resistors with ceramic rider and wound winding.
Silicone cement or inorganic cement coating
Protective coating for cemented wire resistors against environmental influences.
Cast and steel grid resistors
Resistor design for high power in railway and industrial applications.
PTC
Heating element for energy-saving fan heaters in passenger coaches.
Special carbon contacts
Contact material for sliding resistors that glides easily even when hot.
Locations
Schmitten
CHHeadquarters
Diessenhofen
CHBranch office
Hirschthal
CHBranch office
Dachau
DEBranch office Widap GmbH; EU distribution (widap electronic components GmbH & Co. KG)
Castellanza
ITBranch offices S.I.R. Società Italiana Resistor and ICEL S.r.l.
Products and Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Manufacture of power resistors (wire resistors: spiral, tube, frame,Electrical/Assembly | ±10% (tighter tolerances possible) | – | – | – | Steel carrier rail (promat galvanised, blue passivated), Ceramic, Special resistance strip, CuNi44 (resistance material), CrNi wire, Resistance wire, Aluminium (die-cast housing, carrier), Cement (inorganic coating), Silicone cement, Cast, Steel |
| Manufacture of motor protection switches (Type 40, TP10) with star-delta changeoverElectrical/Assembly | – | – | – | – | Aluminium die casting (water-splash-proof housing), Light metal |
| Production of custom circuits (manual star-delta circuits, reversing circuits)Electrical/Assembly | – | – | – | – | – |
| Manufacture of PTC heaters (fan heaters for passenger coaches)Electrical/Assembly | – | – | – | – | PTC |
| Construction of electrical systems and apparatus (reactive power compensation systems, harmonicElectrical/Assembly | – | – | – | – | – |
Company History
- 2015
Market launch of the HPRF resistor
- 2016
Market launch of the semiconductor contactor Type ACS and DCS as well as the CrossBoard® basic system
- 2017
Acquisition and integration of ELKO-Systeme AG; integration of Estec AG; new RXLG high-power resistor
- 2018
Acquisition of S.I.R. Società Italiana Resistor; integration of Trielec AG
- 2019
40th company anniversary
- 2020
Safety topic DIN EN 62052-31
- 2022
New generation of energy-saving PTC fan heaters for railway coaches
- 2024
Acquisitions of ICEL S.r.l. and CAP AG; 45th company anniversary; partnership with Berg GmbH in the field of energy management
- 2026
New partnership with Comsys; acquisition of M.A.I. Industrievertretungen GmbH by widap electronic components; power quality project for the largest marshalling yard in Switzerland