Akapp-Stemmann
Akapp-Stemmann

4-pole closed conductor bar, 4-Ductor

The 4-Ductor is a closed conductor bar system for the power supply of moving equipment, such as overhead cranes and standard production installations. It offers a reliable and cost-effective solution for applications with straight travel tracks.
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4-Ductor 4-pole conductor bar system

The 4-Ductor is a closed conductor bar system for the power supply of moving equipment, such as overhead cranes and standard production installations. It offers a reliable and cost-effective solution for applications with straight travel tracks.

4-pole configurations
Indoor use
No mechanical joints
Easy to use & maintain
RN4 closed conductor bar with pvc housing rail and current collector
RN4 Conductor bar with current collector
RN4 cross section of conductor bar
Cross-section conductor bar, showing 4 poles
Copper cassette for continuous copper conductors
Copper cassette for continuous copper conductors
Closed conductor bar RN4 with end feed box
Conductor bar with end feed box
Current collector with four carbon brushes
Standard current collector for 35A, 70A and 100A
Current collector with four carbon brushes and multi-position guide wheels (mid, top and side), two bearing-mounted.
Current collector with top and side wheels for curves in the track
RN4 closed conductor bar with pvc housing rail and current collector
RN4 cross section of conductor bar
Copper cassette for continuous copper conductors
Closed conductor bar RN4 with end feed box
Current collector with four carbon brushes
Current collector with four carbon brushes and multi-position guide wheels (mid, top and side), two bearing-mounted.

4-Ductor for industrial applications

The AKAPP 4-pole conductor bar system is a reliable and cost-effective solution for the power supply of moving equipment, specifically designed for indoor applications such as overhead cranes. As a simplified and more basic version of the Multiconductor range, it offers dependable performance where extreme environmental protection or advanced routing is not required.

Optimized for overhead crane applications, the system delivers stable power transmission for straight travel tracks, with a focus on simplicity and ease of use. The internal continuous copper conductors operate within the enclosed housing, providing reliable contact and reducing wear under normal operating conditions.

Thanks to its straightforward design and limited configuration complexity, the 4-Ductor system is easy to install and maintain. It is particularly well suited for standard-duty crane systems in production halls and moving machines, where a robust, no nonsense power supply solution is required.

Key Features

  • 4-pole system, up to 160A, per conductor
  • Travel speed up to 250m/min.
  • Continuous copper conductors for reliable and low-wear operation
  • Temperature range: -30⁰ to +60⁰C, indoors
  • Protection class IP23
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AKAPP LongLife
LEARN ABOUT

Continuous Copper Technology with Akapp LongLife

AKAPP LongLife conductor bar systems use continuous copper conductors to eliminate mechanical joints and minimise transition resistance. The smooth, uninterrupted contact surface reduces heat build-up and wear on collector trolleys, ensuring reliable power transmission, longer carbon brush life and lower maintenance requirements.
Learn more about the LongLife advantages
KEY PRODUCT INFORMATION

Product details

Electrical specifications

Rated current, copper conductor models:

CU35 (5,08 mm2)
35A (at 80% duty cycle), max. travel speed 80m/min.
CU50 (8,82 mm2)
50A (at 80% duty cycle), max. travel speed 500m/min.
CU80 (13,75 mm2)
80A (at 80% duty cycle), max. travel speed 500m/min
CU125 (25 mm2)
125A (at 80% duty cycle), max. travel speed 500m/min
CU160/7 (32,50 mm2)
160A (at 80% duty cycle), max. travel speed 500m/min
CU50/AG silver plated (8,82 mm2)
50A (at 80% duty cycle), max. travel speed 500m/min
Rated voltage with protective/earth conductor
690V (CE), 600V (UL)
Minimum operating parameters
Umin. 24V, Imin. 1A (manufacturer recommendation)
Number of poles
Max. 4
Conductor material
Copper
Conductor type
Flat type, continuous
Protection class
IP23

Current collectors

Very wide range of models:

Moving parts. All equipped with ‘pulling chains’ for self-alignment and minimum wear/resistance
Cable connection

Standard models: 1m, 3m or 5m cable

4-pole series:

CL4-35/70/100 series
35A/70A/100A (at 60% duty cycle), max. travel speed 60 m/min. at -20⁰C to +80⁰C
CL4-40 series

40A (at 60% duty cycle), max. travel speed 100 m/min. at -20⁰C to +50⁰C

CL4-40/S series (ball bearing wheels)
40A (at 60% duty cycle), max. travel speed 250 m/min. at -20⁰C to +50⁰C

CL7-4-.. series

Extensive, modular program offering a wide range of options

CL7-4-35/70/100 series (basic)
35A/70A/100A (at 60% duty cycle), max. travel speed 60 m/min. at -20⁰C to +80⁰C
CL7-35/70/100/S series (ball bearing wheels)
35A/70A/100A (at 60% duty cycle), max. travel speed 250 m/min. at -20⁰C to +80⁰C
Travel speed >250m/min.
On request
For all series/models
See brochure / request

Mechanical specifications

Rail housings, straight tracks.

Type RN4, grey (standard). PVC
4 conductor channels, max. travel speed 500m/min., temp.range -30⁰C to +60⁰C
Maximum track length
Depending on copper conductor type and system specifications (see brochure)
Flammability of rail housings
Flame retardant, self-extinguishing, UL 94 V0
Max. suspension distance
2000mm (or less, depending on copper conductor, number of poles and ambient temperature (see brochure)
Feed boxes
Wide range of end- & line-feedboxes (see brochure)
Multiple feedboxes in 1 track (fixed points)

KEV7 expansion joints & copper expansion unit must be used

Wide range of mounting brackets/hangers
Several finishing options (see brochure)

System dimensions & approvals

Standard length rail housing length
4m.
Customized, smaller lengths (Filler pieces)
On request
Customized curved sections
On request
Installation position
Slot down
Application
Indoor systems
Local approvals
CE approved, UL certified & listed
Overhead crane moving material bundles inside a warehouse facility.

Overhead cranes, EOT cranes

Overhead cranes, also referred to as bridge cranes or EOT (Electric Overhead Travelling) cranes, are widely used in industrial environments for handling heavy loads. Commonly manufactured as single-girder or double-girder cranes, these cranes are used in a wide range of industrial applications, both vertical and horizontal movement of materials.

These cranes are commonly used in high-duty environments such as manufacturing, where a stable power supply is essential. The Akapp 4-Ductor conductor bar system is well suited for these indoors applications, thanks to its robust and straightforward design for straight travel tracks.
Steel coils stored in a steel processing facility with an overhead crane.

Process cranes

Proces cranes combine automated technology with overhead cranes for handling heavy duty loads and streamline the working procedures.

These applications demand a durable power supply solution that supports the high operational availability and reliability. The Akapp 4-Ductor system is well suited for these indoors applications, offering a stable current transfer and a rigid conductor design that performs reliably on long, straight travel tracks.

Questionnaire closed conductor bar system

Language: English

Document type: Questionnaire
Product family: Closed conductor bars
Download here

Questionnaire closed conductor bar system

Language: English

Document type: Questionnaire
Product family: Closed conductor bars
Download here

4-Ductor, RN4

Language: English

Document type: Brochure
Product family: Closed conductor bars
Download here

4-Ductor, RN4

Language: English

Document type: Brochure
Product family: Closed conductor bars
Download here

AKAPP LongLife

Language: English

Document type: Leaflet
Product family: Open conductor bars
Download here

AKAPP LongLife

Language: English

Document type: Leaflet
Product family: Open conductor bars
Download here
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Continuous Energy, Your Business' Backbone
AKAPP LongLife
Akapp-Stemmann
Continuous Energy, Your Business' Backbone
Akapp-Stemmann provides high‑quality data and energy transmission systems for moving equipment, ensuring reliable power and signal transfer in industrial environments.
Akapp-Stemmann, Wabtec Netherlands BV.
Darwinstraat 10
6718 XR Ede.
The Netherlands +31 88 600 4500 info.akapp@wabtec.com
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