  A Multi-gap Resistive Plate Chamber (MRPC) equipped with heaters to improve
the counting rate capability was designed for the BM@N experiment in Dubna. The
measurements were performed using a muon beam at IHEP U-70 accelerator in
Protvino. The MRPC at 40$^0$C tolerates counting rate up to 6 kHz/cm$^2$ with
time resolution ~65 ps and efficiency ~95\% which complies with the conditions
of the experiment.
