Catalogs > Industrial Controls Catalog > Motor Control, NEMA > Contactors, Starters, and Overload Relays > Overload Relays > Overload Relay Code Selection
Overload Relay Code Selection
Overload Relay Code SelectionStarters Without Overload Relays for Field Assembly of Starters Using Bulletin 592 Overload Relays &
These products are intended for field installation of Bulletin 592 Eutectic, or 592 electronic overload relays (select Bulletin 592 overload relays from E1 Plus Electronic Overload Relays…Bulletin 592). The overload relays ship in a starter carton with provisions for mounting the overload relay (includes a starter mounting plate, screws/bolts, and instructions).
Eutectic Alloy Overload Relays — Overload relay codes do not apply. Use Cat. No. as listed in the product selection tables. Select heater elements from Eutectic Alloy Overload Relay Heater Elements.
& All Sizes — No overload relay.
Bulletins 520, 522, and 523 require two overload relays.
Bulletins 530, 1282, and 1283 require two overload relays. When selecting the proper electronic overload relay or heater, divide motor nameplate full load amperes by 2.00. Use this value to select the proper overload relays.
Bulletins 540, 1242, and 1243 have one overload relay. When selecting the proper electronic overload relay or heater, divide motor nameplate full load amperes by 1.73. Use this value to select the proper overload relays.
E1 Plus Solid-State Three-Phase Overload Relay (Selectable Class 10, 20, or 30) (Automatic/Manual Reset)
For use with Bulletins 505, 505V, 506, 507, 509, 512, 512M, 513, 520, 522, 523, 530, 532, 533, 540, 542, 543, 570, 572, 573, 1232, 1232X, 1233, 1233X, 1242, 1243, 1272, 1273, 1282, and 1283.∆ ♦ ♠
| NEMA Size | FLC Adjustment Range [A] | Overload Relay Code |
| 00 | 0.1…0.5 | A2A |
| 0.2…1.0 | A2C | |
| 1.0…5.0 | A2E | |
| 3.2…16 | A2F | |
| 0, 1 1PW 1YD |
0.2…1.0 | A2C |
| 1.0…5.0 | A2E | |
| 3.2…16 | A2F | |
| 5.4…27 | A2G | |
| 1 | 9…45 | A2J |
| 2 2PW 2YD |
5.4…27 | A2G |
| 9…45 | A2J | |
| 3 3PW 3YD |
9…45 | A2J |
| 18…90 | A2L | |
| 4 4PW 4YD |
30…150 | A2M |
| 5 5PW 5YD |
60…300 | A2N |
| 6 6PW 6YD |
120…600 | A2R |
| 7▶ | 256…810 | A2T |
| 8▶ | 384…1215 | A2U |
| 9▶ | 800…2250 | A2V |
| ▶ These overload relays have an interposing relay with a 120V AC coil. | ||
| ∆ Bulletins 520, 522, and 523 require two overload relay codes to complete the Cat. No. The first code will denote the high speed overload relay and the second code will denote the low speed overload relay. | ||
| ♦ Bulletins 530, 532, 533, 1282, and 1283 have two overload relays and require two overload relay codes to complete the Cat. No. When selecting the proper overload relay, divide motor nameplate full load amperes by 2.00. Use this value to select the proper overload relay codes. | ||
| ♠ Bulletins 540, 542, 543, 1242, and 1243 have one overload relay. When selecting the proper overload relay, divide motor nameplate full load amperes by 1.73. Use this value to select the proper overload relay code. | ||
E1 Plus Solid-State Single-Phase Overload Relay (Selectable Class 10, 20, or 30) (Automatic/Manual Reset)
For use with Bulletins 505, 505V, 506, 507, 509, 512, 512M, 513, 520, 522, 523, 530, 532, 533, 540, 542, 543, 570, 572, 573, 1232, 1232X, 1233, 1233X, 1242, 1243, 1272, 1273, 1282, and 1283.∆ ♦ ♠
| NEMA Size | FLC Adjustment Range [A] | Overload Relay Code |
| 00 | 1.0…5.0 | S2E |
| 3.2…16 | S2F | |
| 5.4…27 | S2G | |
| 0…2 | 1.0…5.0 | S2E |
| 3.2…16 | S2F | |
| 5.4…27 | S2G | |
| 9…45 | S2J | |
| 3 | 18…90 | S2L |
| ▶ These overload relays have an interposing relay with a 120V AC coil. | ||
| ∆ Bulletins 520, 522, and 523 require two overload relay codes to complete the Cat. No. The first code will denote the high speed overload relay and the second code will denote the low speed overload relay. | ||
| ♦ Bulletins 530, 532, 533, 1282, and 1283 have two overload relays and require two overload relay codes to complete the Cat. No. When selecting the proper overload relay, divide motor nameplate full load amperes by 2.00. Use this value to select the proper overload relay codes. | ||
| ♠ Bulletins 540, 542, 543, 1242, and 1243 have one overload relay. When selecting the proper overload relay, divide motor nameplate full load amperes by 1.73. Use this value to select the proper overload relay code. | ||
E3 Solid-State Overload Relay: 2 Inputs/1 Output
For use with Bulletins 509, 512, 512M, 513, 530, 532, 533, 540, 542, 543, 570, 572, 573, 1232, 1232X,1233, 1233X, 1242, 1243, 1272, 1273, 1282, and 1283.
| NEMA Size | FLC Adjustment Range [A] | Overload Relay Code‡ |
| 00 | 1…5 | EC1A |
| 3…15 | EC1B | |
| 0…2 | 1…5 | EC1A |
| 3…15 | EC1B | |
| 5…25 | EC1C | |
| 9…45 | EC1D | |
| 3 | 9…45 | EC1D |
| 18…90 | EC1E | |
| 4 | 28…140 | EC1F |
| 5 | 60…302 | EC1H |
| 6 | 125…630 | EC1K |
E3 Plus Solid-State Overload Relay: 4 Inputs/2 Outputs, Built-In Ground Fault Sensor, PTC Thermistor Input
For use with Bulletins 505, 505V, 506, 507, 509, 512, 512M, 513, 520, 522, 523, 530, 532, 533, 540, 542, 543, 570, 572, 573, 1232, 1232X, 1233, 1233X, 1242, 1243, 1272, 1273, 1282, and 1283.⋆
| NEMA Size | FLC Adjustment Range [A] | Overload Relay Code‡ |
| 00 | 1…5 | EC2A |
| 3…15 | EC2B | |
| 0…2 | 1…5 | EC2A |
| 3…15 | EC2B | |
| 5…25 | EC2C | |
| 9…45 | EC2D | |
| 3 | 9…45 | EC2D |
| 18…90 | EC2E | |
| 4 | 28…140 | EC2F |
| 5 | 60…302 | EC2H |
| ⋆ Bulletin 520 requires two overload relay codes to complete the cat. no. The first code will denote the high speed overload relay and the second code will denote the low speed overload relay. | ||
| ‡ Rockwell Automation recommends using 120 or 240V AC coils on all NEMA Starters with E3 or E3 Plus electronic overload relays. When using coil voltages other than 120 or 240V AC, consult your local Rockwell Automation sales office or Allen-Bradley distributor. | ||