Constant Current LED Drivers
PRH Series
10–50 W High Density Constant Current Programmable Class 2 LED Driver with 0–10 V and Tri-Mode Dimming™ (TRIAC, ELV & 0–10 V) and with Optional Auxiliary Output
| Input Voltage | Max Output Power | Output Voltage | Output Current Range | Efficiency | THD | Max Case Temp | Power Factor | Dimming Method | Dimming Range | Start Time |
|---|---|---|---|---|---|---|---|---|---|---|
| 120–277 Vac | 50 W | 10–55 Vdc | 100–1400 mA | up to 92% typical | < 20% @ max load | 90 °C (measured at the hot spot) | > 0.9 | Programmable Forward-Phase (120 Vac only), Reverse-Phase (120 Vac only) and 0–10 V (120 & 277 Vac) with Dim-to-Off | 1–100% | 300 ms typical |
Features:
- Same footprint as the popular ESS series, but with a lower height
- Meets IEEE 1789-2015 “no impact” recommended practices for flicker
- Programmable dim-to-off for compliance with ANSI C137.1
- Lifetime: 50,000 hours @ Tc = 90 ℃
- 90 ℃ maximum case hot spot temperature
- UL8750 Class P, Class 2 power supply
- Synchronized start-up: 100 ms
- IP20-rated case
- Surge protection:
- IEC61000-4-5: 3 kV line to line / 3 kV line to earth
- 2.5 kV ring wave: ANSI/IEEE c62.41.1-2002 & c62.41.2-2002 category A
- Complies with ENERGY STAR®, DLC (DesignLight Consortium®), and CA Title 24 technical requirements
Programming:
- Audio jack programming
- 0–10 V dimming profiles: Linear, Non-linear, Logarithmic
- Data log read: SKU, S/N, lot code, hours of operation, FW rev., power cycles
Applications:
- Architectural Lighting
- Commercial lighting
- Indoor lighting
- Residential lighting






| ERP Part Number | Nominal Input Voltage (Vac) |
Output Current (mA) | Power (W) | Voltage Range (Vdc) | Case Type | Dimming | Status | Availability |
|---|---|---|---|---|---|---|---|---|
| PRH-B50W-14-55-SXT | 120 - 277 | 500 - 1400 | 50 | 10-55 | IP20 Rectangular Metal | For/Rev Phase & 0-10V | production | Check > |
| PRH-B50W-14-55-ST | 120 - 277 | 500 - 1400 | 50 | 10-55 | IP20 Rectangular Metal | For/Rev Phase & 0-10V | production | Check > |
| PRH-A50W-14-55-SXZ | 120 - 277 | 500 - 1400 | 50 | 10-55 | IP20 Rectangular Metal | 0-10 V | production | Check > |
| PRH-A50W-14-55-SZ | 120 - 277 | 500 - 1400 | 50 | 10-55 | IP20 Rectangular Metal | 0-10 V | production | Check > |
| PRH-B30W-10-55-SXT | 120 - 277 | 275 - 1050 | 30 | 10-55 | IP20 Rectangular Metal | For/Rev Phase & 0-10V | production | Check > |
| PRH-B30W-10-55-ST | 120 - 277 | 275 - 1050 | 30 | 10-55 | IP20 Rectangular Metal | For/Rev Phase & 0-10V | production | Check > |
| PRH-A30W-10-55-SXZ | 120 - 277 | 275 - 1050 | 30 | 10-55 | IP20 Rectangular Metal | 0-10 V | production | Check > |
| PRH-A30W-10-55-SZ | 120 - 277 | 275 - 1050 | 30 | 10-55 | IP20 Rectangular Metal | 0-10 V | production | Check > |
| PRH-B20W-07-55-SXT | 120 - 277 | 100 - 700 | 20 | 10-55 | IP20 Rectangular Metal | For/Rev Phase & 0-10V | production | Check > |
| PRH-B20W-07-55-ST | 120 - 277 | 100 - 700 | 20 | 10-55 | IP20 Rectangular Metal | For/Rev Phase & 0-10V | production | Check > |
| PRH-A20W-07-55-SXZ | 120 - 277 | 100 - 700 | 20 | 10-55 | IP20 Rectangular Metal | 0-10 V | production | Check > |
| PRH-A20W-07-55-SZ | 120 - 277 | 100 - 700 | 20 | 10-55 | IP20 Rectangular Metal | 0-10 V | production | Check > |
| PRH-A05W-02-55-SXZ | 120 - 277 | 100 - 210 | 10 | 10-55 | IP20 Rectangular Metal | 0-10 V | production | Check > |
