MTA HMPDC, a Versatile Electric Distribution Center for FCA Latam
The collaboration between FCA Latam and MTA has been active
for several years. In particular, in the last four, MTA has worked closely to
bring a new product to the market: the HMPDC, a modular and hybrid power
distribution unit mounted on the Fiat Strada, the all-Brazilian pick-up that
has experienced a boom in sales exceeding all expectations.
The HMPDC is a scalable solution composed of a pre-fuses box
with a power busbar and hard-wired or PCB Modules allowing flexible and
versatile combinations according to different architectures.
Smaller space available and high temperatures in the engine
compartment made it necessary to develop new technologies in order to get
benefits in terms of price/cost reduction and fuel efficiency. From this need
comes the use of a new family of fuses (Compact fuses developed and homologated
by MTA) and electronic integration.
The result is a new PDC smaller than the current ones.
The pre-fuse boxes house the last generation clinched fuses: the
MegaCompact. According to the configuration needed in the vehicle, the quantity
and the amperages change. MTA also developed a new series of power ring
terminals with mechanical polarization to prevent mismating problems. Fuse,
shunt, and busbar are handled individually and this allows for the industrialization of a
large number of combinations of multi fuses that can be matched with new
product developments.
Modules
There are four different hard-wired modules fed from the
pre-fuse box through a busbar. All of these modules house MTA MaxiCompact and
M8Compact fuses. Each module is provided with a secondary lock and terminals
manufactured by MTA.
PCB with soldered relays and pins
A module with PCB technology has been developed for more
extended architectures. The PCB houses contacts assembled with press-fit
technology and is populated with plug-in fuses, relays, and SMT components. The
power is fed from the prefuse box through the busbar.
R&D
and production in Brazil
Research & Development of all HMPDC components was
implemented in MTA Brasil. The entire production process also takes place in
Brazil where the molding of plastics, the blanking of metals, and the assembly
of components are carried out. The same is true for press-fit and SMT processes
for PCB modules. On-site production makes it possible to react quickly and
easily to any customer request.
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