Product Model
ELR H3-I-SC- 24DC/500AC-9

Selling Points
- 1Efficient Motor Control: Starts 3-phase AC motors up to 500V AC with 24V DC control voltage.
- 2Adjustable Overload Shutdown: Provides adjustable overload shutdown for enhanced safety and reliability.
- 3Durable Design: Built with durable components and meets IP20 degree of protection for harsh environments.
- 4Quick Response Time: Features a typical turn-off time of less than 30 ms for rapid motor control.
- 5Versatile Connectivity: Offers screw connection and flexible conductor cross-section options for easy installation.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
Product type | Hybrid motor starters | Product family | CONTACTRON |
Operating mode | 100% operating factor | Article revision | 11 |
Number of phases | 3 | Motor starter type | Direct starter |
Switching frequency | ≤ 2 Hz (Load-dependent) | Maximum power dissipation for nominal condition | 13.5 W |
Switching frequency | ≤ 2 Hz (Load-dependent) | Maximum power dissipation | 14.6 W |
Minimum power dissipation | 1.1 W | Coordination type | 1 |
Rated control circuit supply voltage U | 24 V DC | Control supply voltage range | 19.2 V DC ... 30 V DC |
Rated control supply current I | 40 mA | Protective circuit | Surge protection
Reverse polarity protection |
Rated insulation voltage | 500 V | Rated surge voltage | 6 kV |
Overvoltage category | III | Degree of pollution | 2 |
Insulation characteristics between the control input and control supply voltage, and auxiliary circuit to the main circuit | Safe isolation (IEC 60947-1) at operating voltage ≤ 300 V AC (e.g., 230/400 V AC, 277/480 V AC)
Basic insulation (IEC 60947-1) at operating voltage 300 V AC ... 500 V AC | Isolation characteristics between the control input and control supply voltage to auxiliary circuit | Safe isolation (IEC 60947-1) in the auxiliary circuit ≤ 300 V AC |
Operate threshold | > 45 A | Response time | < 2 s |
Input name | Control input | Rated actuating voltage U | 24 V DC |
Triggering voltage range | 19.2 V DC ... 30 V DC | Rated actuating current I | 5 mA (Input type 1) |
Switching threshold | 9.6 V (“0” signal)
19.2 V (“1” signal) | Typical turn-off time | < 30 ms |
Protective circuit | Reverse polarity protection | Rated operating voltage U | 500 V AC |
Operating voltage range | 42 V AC ... 550 V AC | Rated operating current I | 9 A (AC-51)
6.5 A (AC-53a) |
Mains frequency | 50/60 Hz | Load current range | 1.5 A ... 9 A (see to derating) |
Trigger characteristic in acc. with IEC 60947-4-2 | Class 10A | Cooling time | 20 min (for auto reset) |
Leakage current | 0 mA | Protective circuit | Surge protection |
Note | Confirmation: floating change-over contact, signal contact | Contact switching type | 1 changeover contact |
Switching capacity in accordance with IEC 60947-5-1 | 3 A (230 V, AC15)
2 A (24 V, DC13) | Connection method | Screw connection |
Stripping length | 8 mm | Screw thread | M3 |
Conductor cross section rigid | 0.2 mm² ... 2.5 mm² | Conductor cross section flexible | 0.2 mm² ... 2.5 mm² |
Conductor cross section AWG | 24 ... 14 | Tightening torque | 0.5 Nm ... 0.6 Nm
5 lb |
Connection method | Screw connection | Stripping length | 8 mm |
Screw thread | M3 | Conductor cross section rigid | 0.2 mm² ... 2.5 mm² |
Conductor cross section flexible | 0.2 mm² ... 2.5 mm² | Conductor cross section AWG | 24 ... 14 |
Tightening torque | 0.5 Nm ... 0.6 Nm
5 lb | Status display | LED (yellow) |
Operating voltage display | Green LED | Error indication | Red LED |
Width | 22.5 mm | Height | 107 mm |
Depth | 114 mm | Flammability rating according to UL 94 | V0 (Housing) |
Degree of protection | IP20 | Ambient temperature (operation) | -25 °C ... 70 °C (observe derating) |
Ambient temperature (storage/transport) | -40 °C ... 80 °C | Altitude | ≤ 2000 m |
Certificate | UKCA-compliant | Certificate | NLDX.E228652 |
SCCR | 100 kA (500 V AC (fuse: 30 A class CC/30 A class J (high fault)))
5 kA (500 V AC (fuse: 20 A RK5 (standard fault))) | FLA | 6.5 A (500 V AC) |
Group installation | 20 A (class RK5, SCCR 5kA, #24 - 14 AWG max. solid and stranded)
30 A (class CC or J, SCCR 100kA, #24 - 14 AWG max, solid and stranded) | Category code | NLDX / NRNT |
Standards/regulations | IEC 60947-1
IEC 60947-4-2 | Mounting type | DIN rail mounting |
Assembly note | alignable, for spacing see derating | Mounting position | vertical (horizontal DIN rail, motor output below) |
Specifications may be subject to change without notice