25W ÷ 1000W

Elliptical shape, High surface load, Submerged collars

 IP00, Soldering terminals, Suitable for grouping

 Dynamic braking, Harmonic filter, Charge/discharge capacitor, Heating 

 Industrial Automation, Energy 

 Ohmic values out of range, Special tolerance on resistance (2%, 1%), Adjustable version, Low inductance, Intermediate grip 

 Depending on the ohmic value the used alloy may be NiCr or CuNi44 


The resistor is marked on the collar with indelible ink high temperature FAIRFILD RCA 300 150R 5% WW/YY (week / year)


The resistor is packed in a way to preserve incidental damages due to transport. The resistor is made by ceramic parts, accidental fall can damage it, handle with care.


Every effort has been made to ensure that the information in this datasheet is accurate. Fairfild is not responsible for printing or clerical errors. All properties and characteristics mentioned in this datasheet are only for informational purposes. The information in this datasheet is offered solely for your consideration and should not be taken as a warranty or representation for which we assume legal responsibility. The customer bears all responsibility for use and application of Fairfild products. There is no responsibility of the manufacturer for any damage to persons and properties in case of improper use. Fairfild reserves the right to change specifications without prior notice.


This datasheet is subject to copyright. Fairfild reserves all rights of translation in any language, reprinting, re-use of illustrations.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic, mechanical, photocopying, without the written permission of the copyrighted owner Fairfild, Italy. Violations may be subject to legal proceedings involving monetary damages as well as compensation for costs and legal fees under Italian copyright law and regulation within the European Union.

Ordering information


Y N : not inductive version

R : adjustable version

P : intermediate grip

XXX Model / Rated power i.e. 300 : 300 W

RRRR Resistance value (nominal at 20°C)

RCA 300 150R 5%
RCA is the name of the product
N means the not inductive version
300 is the model that corresponds, for RCA family, to the rated power, in this case 300 W
150R means 150 Ω that is the nominal ohmic value at 20°C
5% is the tolerance on the ohmic value, in this case the value of the resistor is accepted when is within 142.5 Ω ÷ 157.5 Ω