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POTTER & BRUMFIELD PM SERIES HEAVY DUTY 25 AMP MULTICONTACT AC OR DC POWER RELAY File E22575 (PM & PMC) File E22575 (PMF & PMT) File LR15734
· Contact ratings to 25 amps. · 8-32 screw or .25 Q.C. termination. · AC and DC coils available. · 4PDT contact arrangement. · Plastic and metal covers available.
Arrangements: 4 Form A (4PST-NO) and 4 Form C (4PDT).
Ratings: PM & PMT: 25 amps @ 277VAC, max.; 10 amps @ 28VDC;
1HP @ 120/240VAC, Single Phase.
PMC & PMF: 20 amps @ 240VAC, max.; 10 amps @ 28VDC;
1HP @ 120/240VAC, Single Phase.
Material: Silver-cadmium oxide.
Expected Life: 10 million operations, mechanical; 100,000 operations at
rated loads @ 25C.
Voltage: From 6 to 220VDC and 6 to 480VAC, 50/60Hz.
Nominal Power: DC: 4.4W @ 25C.
AC: 14VA @ 25C.
Duty Cycle: Continuous.
Finish: Impregnated with high quality electrical varnish.
Initial Insulation Resistance: 100 megohms, minimum.
DC Coils AC Coils (50/60 Hz.)
DC Resis. DC Resis.
Nominal In Ohms Nominal Nominal In Ohms Nominal
Voltage +/-10% Current In Voltage +/-15% Current IN
@ 25C Milliamps @ 25C Milliamps
6 8.2 732 6 .37 2,150
12 33 364 12 1.4 1,070
24 132 182 24 5.0 540
48 526 91 120 120 128
110 2,760 40 240 587 61
125 3,570 35 480 1,790 32
220 Use a 110 volt relay with 2700 to 3300 ohm 5 watt
wire wound resistor in series.
Must-Operate Voltage: DC: 75% of nominal voltage @ +25C. AC: 85% of nominal voltage @ +25C.
Temperature Range: AC: -55C to +45C @ nominal coil power.
DC: -55C to +55C @ nominal coil power (+75C)
available on special order.
Mounting: Standard: Three holes; one front key-hole and two rear
channel slots for #8-32 screws.
Special: Adaptor plate available for adapting these relays to a
chassis pre-drilled for our PRD series relays.
Termination: PM & PMC: Heavy-duty screw type with #8-32 BH screw.
PMT & PMF: .250" (6.35mm) quick connect terminals.
Insulating Material: Molded polyester alkyd.
Enclosure: PMC & PMF: Shipped with pre-installed plastic dust cover.
PM & PMT: Plastic dust cover or metal enclosure available.
Order separately
Weight: 14oz (397 g) approx.
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