POTTER & BRUMFIELD KR-3-H series 20 AMP SMALL AC or DC RELAY File E22575

· Industry standard octal-type termination for quick installation.
· Contact arrangements from 1 Form A (SPST - NO) to 3 Form C (SPDT).
· Indicator lamp and push-to-test options available on certain models.
· The KRPA series is the automated manufactured version of the KRP series.
· Hermetically sealed option available with KR UL recognized for Class I
· Div. 2 Hazardous locations, Groups A, B, C, D.

Arrangements:  See Ordering Information Table.
Materials:     Silver or silver-cadmium oxide, with or without gold
               flashing.
Expected Life: 10 million operations min., mechanical; 100,000 
               operations min. @ rated loads.

Contact
Code            Arrangement            Contact Rating

Y&L             1, 2, 3 Poles          5A @ 120VAC 
(Silver)                               3A @ 240VAC 
                                       1/10HP @ 120VAC
                                       1/6 HP @ 240VAC

G&N             1, 2, 3 Poles          10A @ 240VAC
(Silver-Cad.                           1/2 HP @ 240VAC
Oxide)                                 1/3 HP @ 120VAC

Contact
Code            Arrangement            Contact Rating
Y&L             1,2,3 Poles            5A  @ 28VDC, 120VAC, 80% PF


G&N             1,2,3 Poles            10A @ 28VDC, 120VAC, 80% PF
                                       6A  @ 250VAC

Contact
Code            Series                 Contact Rating

Y               KA (1)                 5A @ 120VAC, 3A @ 240VAC,
                                       1/10 HP @ 120VAC, 1/6 HP @ 240VAC


G               KA (2)                 10A @ 120VAC, 6A @ 240VAC
                                       1/6 HP  @ 120VAC, 1/3 HP @ 240VAC

Notes:
1 Listed by C.S.A. for 5A @ 120VAC 80% PF 
2 Listed by C.S.A. for 10A @IPOVAC 80% Pr

Between Open Contacts:    500V rms
Between All  Contacts:  1,500V rms

                    Nominal Power    Maximum Power

KRP     AC          2VA              Open Models - 5VA
                                     Enclosed Models-4VA


KRPA    DC          1.2W             Open Models - 4W
                                     Enclosed Models - 3W


KA      AC          2VA   
        DC          125mW/movable arm   Open Models -4W


Notes:
Duty Cycle: Continuous.
Initial Insulation Resistance: KRP, KRPA - 1000 Megohms, min.
                               KA        -  100 Megohms, min.

         Nominal         DC Ohms             Nominal Coil
         Voltage         +/-10%              Current (ma)


           6                  32             188
          12                 120             100          
DC        24                 472              51 
Coils     48               1,800              26.6
         110              10,000              11.5
         220      Use 110V relay with 10,000 Ohm 5W Resistor in series


           6                   6             335
AC        12                  24             168
Coils     24                  85              84
         120               2,250              17.5
         240               9,110               8.75

Must-Operate Voltage: DC: 75% of nominal voltage.
                      AC: 85% of nominal voltage.
Operate Time (Excluding Bounce):
                      15 milliseconds typical @ nominal voltage
Release Time (Excluding Bounce):  
                      10 milliseconds typical @ nominal voltage

Temperature Range:
Open Models:        AC: -45 degree C to +70 degree C
                    DC: -45 degree C to +85 degree C 
Enclosed Models:    AC: -45 degree C to +55 degree C
                    DC: -45 degree C to +70 degree C

Open Models:     Solder Terminals.
Enclosed Models: Octal-Type Plug.          
Enclosures:      Transparent Polycarbonate.          
                 Hermetically sealed metal case.
                 Also available with KR.
Weight:          KA:  1.7 oz. (48.2 g) approximately.
                 KRPA, KRP: 3.0 oz. (85 g) approximately.