RSPOR 420

RSPOR 420

Tubolar ceramic support

The RSPO is an undulated rectangular wire resistor wound on a ceramic tubular support and coated with vitreous enamel. The purpose of the coating is to (1) ensure the mechanical protection of the wire, (2) allow a uniform heat distribution and (3) limit thermal expansion of the coils. The coating does not have an electrical insulation function. Vitreous enamel ensures total waterproofing of resistance. The greater heat exchange surface area, due to the winding with ribbed rectangular wire, allows reaching higher values of dissipated power. The RSPO is not available in the low inductance version. It is available in the version with adjustment slider, in this case; it is called RSPOR.

Overview Table

Min Resistance
0.3
Max Resistance
33
Tolerance (%)
+15%
Rated Continuos Power (W)
420
Protection Degree (IP)
IP00
Not Inductive
No
Rated insulation voltage (V)
(Clarification on Voltage definitions.pdf)
3000
Adjustable
yes
Thermal switch
no
UL
no
Weight
0.52

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