RK Series
- Compact
- Single stage
- Chassis mount
- Significant differential mode performance
- Suitable for industrial machinery
- Low input leakage current makes it suitable for portable equipment
Ordering Information

Specifications
Maximum leakage current, each Line to Ground: |
| @ 120 VAC 60 Hz | 0.16mA |
| @ 250 VAC 50 Hz | 0.26mA |
|
Hipot rating (one minute): |
| Line to Ground | 2250 VDC |
| Line to Line | 1450 VDC |
| | |
Operating Frequency: | 50 / 60 Hz |
| | |
Rated voltage (max.): | 250 VAC |
| | |
Rated Current: | 3A to 20A |
| |
Operating Ambient Temperature Range (at rated current Ir): |
| | -10°C to +40°C |
In an ambient temperature (Ta) higher than +40°C the maximum operating current (Io) is calculated as follows: Io = Ir √(85-Ta)/ |
Available Part Numbers
Click on any part number for 3D CAD models, customer drawings, distributor stock status and eCommerce Links.
3ERK1 | 6ERK1 |
10ERK1 | 15ERK1 |
20ERK1 | |
Electrical Schematic

Case Styles
Typical Dimensions: |
| Line/Load Terminals(4): | .250 [6.3] with .07 [1.8] Dia. hole |
| Ground Terminal(1): | .250 [6.3] with .07 x .16 [1.8 x 3.8] slot |
| Mounting Holes (2): | .188 [4.75] Dia. |
RK1 (10, 15 & 20A)
Typical Dimensions: |
| Line/Load Terminals(4): | .250 [6.3] with .07 [1.8] Dia. hole |
| Ground Terminal(1): | .250 [6.3] with .07 x .16 [1.8 x 3.8] slot |
| Mounting Holes (2): | .188 [4.75] Dia. |
Case Dimensions
Part No. | A | B | C | D | E |
(max.) | (max.) | (max.) | ± .015 ‡ | (max.) |
± .38 |
3ERK1 | 3.35 | 1.82 | 1.16 | 2.38 | 2.78 |
85.09 | 46.26 | 29.46 | 74.68 | 70.61 |
6ERK1 | 3.35 | 1.82 | 1.28 | 2.38 | 2.78 |
85.09 | 46.23 | 32.51 | 74.68 | 70.61 |
10ERK1 15ERK1 20ERK1 | 3.85 | 2.07 | 1.78 | 2.94 | 3.35 |
97.79 | 52.58 | 45.21 | 74.67 | 85.09 |
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