  Located at the center of the Perseus cluster, 3C 84 is an extremely bright
and nearby radio galaxy. Because of the strong diffuse thermal emission from
the cluster in X-rays, the detailed properties and the origin of a power-law
component from the central active galactic nucleus (AGN) remains unclear in the
source. We report here the first NuSTAR observations of 3C 84. The source was
observed for 24.2 and 32 ks on February 01 and 04, 2018, respectively. NuSTAR
observations spectrally decompose the power-law AGN component above 10 keV. The
power-law component dominates the spectrum above 20 keV with a photon index
$\sim$1.9 and an energy flux F$_{20-30 keV}$ = 1.0 $\times$10$^{-11}$ erg
cm$^{-2}$ s$^{-1}$, corresponding to an isotropic luminosity, $L_{20-30 keV}$ =
7.4$\times$10$^{42}$ erg s$^{-1}$. We discuss possible emitting sites for the
power-law component. The expected thermal emission from the accretion disk is
not hot enough to account for the hard X-rays detected from the source. Similar
X-ray and $\gamma$-ray photon indices and long-term flux variations, the
absence of cutoff energy in the hard X-ray spectrum of the source, correlated
hard X-ray flux and hardness ratio variations, and the similarity of
optical-X-ray slope to blazar rather than Seyfert galaxies supports the hard
X-ray power-law component originating from the jet.
