Heating resistor for electrical panels: applications of the RSN TC 25
The Fairfild RSN TC 25 is a resistor from the RS family also suitable for heating applications in electrical panels and for anti-condensation function.
The product can be used in contexts where the electrical panel requires a resistor dedicated to heating or condensation management, while maintaining the connection with the other applications intended for the RS family.
In addition to use for electrical panels or anti-condensation, the RSN TC 25 is also associated with harmonic filter circuits, neutral grounding resistors, and capacitor charging/discharging in RC circuits.
What is the RSN TC 25
The RSN TC 25 is a wire-wound resistor on a tubular ceramic support coated with vitreous enamel.
The coating is intended to ensure mechanical protection of the wire, allow uniform heat distribution, and limit the thermal expansion of the turns. The vitreous enamel also ensures the total impermeability of the resistor.
This construction identifies the RSN TC 25 as part of the RS family, with specific characteristics linked to the tubular ceramic support, the coating, and the available terminations.
Heating resistor for electrical panels or anti-condensation
Among the applications of the RSN TC 25 is its use as a heating resistor for electrical panels or with an anti-condensation function.
This intended use makes it possible to connect the product to a precise application requirement: inserting a resistor in the panel intended for heating or condensation management.
The evaluation of the component therefore does not depend only on the rated power, but also on the installation conditions, the chosen configuration, and the characteristics required by the system.
Other applications indicated for the RSN TC 25
In addition to use as a heating resistor for electrical panels or anti-condensation, the RSN TC 25 can be used as a basic element in harmonic filter circuits, as a basic element for neutral grounding resistors, and as a capacitor charging and discharging resistor in RC circuits.
These applications make it possible to connect the RSN TC 25 to different technical areas, while maintaining the RS family and its available configurations as a reference.
The product therefore takes on a cross-functional role: on the one hand in heating applications for electrical panels, and on the other in circuits and systems where resistors with specific construction and connection characteristics are required.
Application sectors
The main application sectors of the RSN TC 25 are industrial automation, the energy sector, and the railway sector.
The resistor is therefore positioned in three different areas, with applications ranging from heating for electrical panels to harmonic filter circuits, from neutral grounding to capacitor charging and discharging in RC circuits.
This variety of intended uses makes it possible to view the RSN TC 25 as a component of the RS family that can be used in multiple application contexts, always within the scope of the indicated sectors.
Essential technical characteristics
The RSN TC 25 has a continuous rated power of 25 W, a minimum resistance of 13 Ω, a maximum resistance of 3600 Ω, tolerance ±5%, IP00 protection rating, and a rated insulation voltage of 700 V.
The RS family includes 10 models, with rated powers from 15 W up to 300 W and an ohmic value range between 1.6 Ω and 91 kΩ. The rated voltage varies depending on the model.
These data make it possible to place the RSN TC 25 within the RS range and to evaluate the model in relation to rated power, ohmic value, insulation voltage, and protection rating.
Terminations, versions, and options
The collar termination is called TC, while the version with clamp terminals is called TS.
The RS family is also available on the website in the low-inductance version, indicated as RSN, with adjustment slider, indicated as RCR, and with fixed intermediate tap, indicated as RCP.
For the RSN TC 25, separately ordered options are available: out-of-spec ohmic values, ohmic value tolerance of 3%, 2%, 1%, 0.5%, and screw collar traction.
The presence of terminations, versions, and options makes it possible to evaluate the resistor according to the required configuration and the intended connection methods.
Installation instructions
The resistor with TC-type collar terminals can be mounted with the related SC or SQ support brackets.
For better heat distribution, Fairfild recommends horizontal mounting. The TC collar terminals in nickel-plated brass allow electrical connection via cable lugs or by soldering.
In the case of group installation, Fairfild recommends maintaining a pitch equal to 2 times the diameter of the resistor.
The mounting instructions are part of the product evaluation, especially when the resistor must be installed in a group or integrated inside an electrical panel.
The Fairfild RSN TC 25 is a resistor on a tubular ceramic support coated with vitreous enamel, also used as a heating resistor for electrical panels or anti-condensation.
The applications, sectors of use, terminations, and installation instructions make it possible to evaluate it as a component of the RS family for industrial automation, energy, and the railway sector.
