Manufacturing of power resistors, load banks, motor protection technology and electrical systems for rail technology and power quality
Widap AG
Schmitten · Diessenhofen · Hirschthal · Dachau · CastellanzaNew on Amplifa
About Widap AG
Widap AG manufactures and distributes power resistors and load banks, develops customised solutions for rail technology, and produces reactive power compensation systems (conventional and dynamic) as well as harmonic filters (active and passive). The portfolio also includes electrical systems and apparatus as well as an extensive range of electrical components such as load disconnect switches, load changeover switches, fuses, energy meters, motor protection filters and busbar systems. In resistor technology, the company produces open-wound wire resistors, cemented and glazed wire resistors, cast iron and steel grid resistors, railway and braking resistors, potentiometers and PTC heaters; materials used include edge-wound special resistance ribbon, CuNi and CrNi wire, ceramics, aluminium die casting and galvanised steel. The motor protection switches produced in Switzerland (Type 40, TP10) are characterised by robustness even under adverse environmental conditions. Customers are found in rail technology, power supply, power distribution, industry/automation, agriculture and power quality. The headquarters is located in Schmitten (CH), complemented by branches in Diessenhofen, Hirschthal, Dachau (DE) and Castellanza (IT).
- Site
- Schmitten
- Processes
- Manufacture of power resistors (wire resistors, cast iron/steel grid resistors,, Manufacture of motor protection switches (Type 40, TP10) with aluminium die-cast housing, Custom manufacture of star-delta manual switches and reversing circuits, Production of reactive power compensation systems (conventional and dynamic) as well as, Development and construction of customised solutions for rail technology, Manufacture of load banks / load test systems, Customised solutions for rail technology, Reactive power compensation (conventional and dynamic)
- Materials
- Special resistance ribbon (edge-wound), CuNi44 (resistor material), CuNi wire, CrNi wire, Ceramics (resistor bodies/riders), Aluminium (die-cast housings, carriers), Steel (carrier rail promat galvanised, steel grid resistors), Edge-wound special resistance ribbon
- Certificates
- FAT acceptance of load banks
- Founded
- 1979
- Industries
- Rail technology, Power supply, Power distribution, Industry/Automation, Agriculture, Power Quality
- 01
Engineering and development
- 02
Winding of resistor elements (special resistance ribbon, CuNi/CrNi wire)
- 03
Assembly of resistors on steel or aluminium carriers with ceramic riders
- 04
Assembly of electrical systems and apparatus
- 05
Sales and distribution via CH/DE/IT
Materials and Processes
Edge-wound special resistance ribbon
Resistor material for ZO type spiral resistors on steel carrier rails with ceramic riders.
CuNi44
Resistor material for sliding resistors on ceramic carriers.
CuNi wire
Winding wire for tubular and sliding resistors.
CrNi wire
Winding wire for FW type tubular resistors.
Ceramics
Resistor bodies and riders for wire resistors.
Aluminium die casting
Water-resistant housings of the Type 40 motor protection switches.
Steel (galvanised)
Steel carrier rail promat galvanised and steel grid resistors.
Locations
Schmitten
CHHeadquarters
- Materials
- Resistance ribbon, CuNi/CrNi wire, ceramics, aluminium, steel
Diessenhofen
CHBranch
Hirschthal
CHBranch
Dachau
DEBranch (Widap GmbH) and EU distribution (Widap electronic components GmbH & Co. KG)
Castellanza (VA)
ITBranches (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, cast iron/steel grid resistors,Electrical/Assembly | ±10% | – | – | – | Resistance ribbon (special material), CuNi wire, CrNi wire, Ceramics, Aluminium, Steel |
| Manufacture of motor protection switches (Type 40, TP10) with aluminium die-cast housingAssembly | – | – | – | – | Aluminium die casting |
| Custom manufacture of star-delta manual switches and reversing circuitsAssembly | – | – | – | – | – |
| Production of reactive power compensation systems (conventional and dynamic) as well asAssembly | – | – | – | – | – |
| Development and construction of customised solutions for rail technologyEngineering | – | – | – | – | – |
| Manufacture of load banks / load test systemsAssembly | – | – | – | – | – |
Additional services
Reference customers
Quality
Resistors are manufactured with a standard tolerance of ±10%, tighter tolerances are available on request. Load banks have already been accepted by customers as part of FAT (Factory Acceptance Tests).
| Evidence | Schmitten |
|---|---|
| FAT acceptance of load banks |
Company History
- 1979
Foundation of Widap AG
- 2017
Integration of Estec AG (January) as well as acquisition (July) and integration (September) of ELKO-Systeme AG
- 2018
Acquisition of S.I.R Società Italiana Resistor (January) and integration of Trielec AG (December)
- 2019
40th anniversary with open day
- 2024
45th anniversary; acquisition of ICEL S.r.l. (October) and CAP AG (November)
- 2026
New partnership with Comsys (February) and acquisition of M.A.I. Industrievertretungen GmbH by widap electronic components (August)