General Information; Introduction; Description; General - Hitachi PN-150BE Manual

PN-150BE Biased High Efficiency Vital Relay
1.

GENERAL INFORMATION

1.1. Introduction

This manual provides service information for the PN-150BE plug-in relay. The PN-
150BE relay is a biased high efficiency relay designed for special circuit applications
where voltage losses are critical.

1.2. Description

1.2.1. General

The PN-150BE relay is a high efficiency biased relay which will respond to very low
currents. The coils of this relay may be externally connected in series or multiple to suit
the particular application. This characteristic permits it to be used in series with another
relay, in applications where low currents must be employed to keep voltage loss to a
minimum, or with "UT" timing units.
The relay is factory calibrated to operate across a wide environmental range. All moving
parts are enclosed in a sturdy, transparent, dust and moisture resistant cover. To insure
the relay is inserted in its proper mounting base, all relays have indexing pins. Relays
lock securely in the plug-in position.

1.2.2. Coils

Coil resistance of PN-150BE relay is dependent on part number. Refer to Section 1.3.1
to correlate part numbers to coil resistance values. The resistance selected depends on
the system voltage and circuitry.

1.2.3. Contacts

Contacts of the PN-150BE relay are standard low voltage silver-to-silver impregnated
carbon front and silver-to-silver back. See Figure 5-1 for a pictorial representation of the
contact assembly.

1.3. Specifications

The following paragraphs provide the electrical and mechanical specifications of the
PN-150BE relays covered in this manual.
Copyright 2019 SM 4551L, Rev. 0 1, March 2019 1-1