AC/DC Power Supplies
Delta Electronics CliQ II DRR SERIES AC/DC Power Supply
Delta's DRR Series introduces the latest in power supply redundancy modules, designed for 24V to 48Vdc systems up to 40A. These modules ensure uninterrupted power with two channel inputs and dual DC OK LED indicators. They also feature a wide input voltage range, voltage alarm relay outputs, and a corrosion-resistant conformal coating. Ideal for critical systems requiring reliable redundancy, the DRR Series offers versatile support for parallel power supply configurations.
Features
- 24V to 48Vdc - 20A & 40A Redundancy module
- 2 Channel Inputs
- 2 x DC OK LED indicator signal
- Voltage alarms relay output
- Wide Input 22-60Vdc
- Conformal coating corrosion resistant
Specifications
Technical Illustrations
Downloads
INPUT | |
---|---|
Nominal Input voltage | 24V / 48Vdc |
Input voltage range | 22 - 60Vdc |
Input current | DRR-20: 20A Max DRR-40: 40Max |
OUTPUT | |
---|---|
Output voltage | 24 / 48Vdc Vin - 0.65Vdc drop |
Output current | DRR-20: 20A Max DRR-40: 40Max |
Short Circuit Over Load Limit | DRR-20: 25A DRR-40: 50A |
Efficiency | > 97% typ. |
STANDARDS AND APPROVALS | |
---|---|
Electrical Equipment | IEC60204-1 (Over Voltage Category III) |
Electrical Safety | UR/cUR recognized to UL60950-1, AIQ BG to EN60950-1, CB test certificate and report to IEC60950-1 and CE |
Industrial Control Equipment | UL/cUL listed to UL508 |
Hazardous Location / ATEX | cCSAus to CSA C22.2 No.213-M1987, ANSI / ISA 12.12.01:2007 [Class I, Division 2, Gr oup A,B,C,D T4, Ta = -40°C to +80°C (> +50°C derating)] EN60079-0:2009, EN60079-15:2010 [ExII 3G Ex nA nC IIC T4 Gc, Ta = -40°C to +80°C (> +50°C derating)] |
CE | Conformance with EMC guideline 2004/108/EC and for low voltage guideline 2006/95/EC For DRR-20A and DRR-40A: In conformance with Equipment for explosive atmospheres (ATEX) directive 94/9/EC |
Electronic Equipment | EN50178 / IEC62103 |
Safety Entry Low Voltage | PELV (EN60204), SELV (EN60950) |
RoHS Compliant | RoHS Directive 2011/65/EU Compliant |
Protection Against Electric Shock | DIN 57100-410 |
ENVIRONMENTAL | |
---|---|
Operating Temperature | -40°C to +80°C |
De-rating | > 50°C derate 2.5%/°C linearly to 70°C |
Humidity | 95%RH (Non condensing) |
PROTECTION | |
---|---|
Overload | The overload condition must be controlled by The PSUs in parallel; The limit of input current would not more than 25A (For 20A module) or not more than 50A (For 60A module). |
MTBF | >800,000hrs , as per Bellecore std, or IEC61709 |
Isolation voltage | Input - PE; 1.5KVAC Output - PE; 1.5KVAC |
Degree of protection | IP20 |
Class of protection | Class II with PE connection |
ALARMS AND INDICATORS | |
---|---|
Indicators | DC Input OK: V in1 OK and V in2 OK (Green LED) 24V System; LED turns on when Vin1 & Vin2 > 18V ±5%, and not more than 30V 48V System; LED turns on when Vin1 & Vin2 > 36V ±5% and not more than 60V Outside these ranges the LED will turn OFF |
Input Voltage Alarm / Relay Contacts | 24V system: Vin1 & Vin2, >18V ± 5% or <30V 48V system: Vin1 & Vin2, >36V ± 5% or <60V |
MECHANICAL | |
---|---|
Case Cover | Aluminium |
Dimensions/Weight | 121 x 50 x 122mm, 375g 121 x 50 x 122mm, 515g |
Mounting Rail | TS35 DIN Rail in accordance with EN60715 |


INPUT | |
---|---|
Nominal Input voltage | 24V / 48Vdc |
Input voltage range | 22 - 60Vdc |
Input current | DRR-20: 20A Max DRR-40: 40Max |
OUTPUT | |
---|---|
Output voltage | 24 / 48Vdc Vin - 0.65Vdc drop |
Output current | DRR-20: 20A Max DRR-40: 40Max |
Short Circuit Over Load Limit | DRR-20: 25A DRR-40: 50A |
Efficiency | > 97% typ. |
STANDARDS AND APPROVALS | |
---|---|
Electrical Equipment | IEC60204-1 (Over Voltage Category III) |
Electrical Safety | UR/cUR recognized to UL60950-1, AIQ BG to EN60950-1, CB test certificate and report to IEC60950-1 and CE |
Industrial Control Equipment | UL/cUL listed to UL508 |
Hazardous Location / ATEX | cCSAus to CSA C22.2 No.213-M1987, ANSI / ISA 12.12.01:2007 [Class I, Division 2, Gr oup A,B,C,D T4, Ta = -40°C to +80°C (> +50°C derating)] EN60079-0:2009, EN60079-15:2010 [ExII 3G Ex nA nC IIC T4 Gc, Ta = -40°C to +80°C (> +50°C derating)] |
CE | Conformance with EMC guideline 2004/108/EC and for low voltage guideline 2006/95/EC For DRR-20A and DRR-40A: In conformance with Equipment for explosive atmospheres (ATEX) directive 94/9/EC |
Electronic Equipment | EN50178 / IEC62103 |
Safety Entry Low Voltage | PELV (EN60204), SELV (EN60950) |
RoHS Compliant | RoHS Directive 2011/65/EU Compliant |
Protection Against Electric Shock | DIN 57100-410 |
ENVIRONMENTAL | |
---|---|
Operating Temperature | -40°C to +80°C |
De-rating | > 50°C derate 2.5%/°C linearly to 70°C |
Humidity | 95%RH (Non condensing) |
PROTECTION | |
---|---|
Overload | The overload condition must be controlled by The PSUs in parallel; The limit of input current would not more than 25A (For 20A module) or not more than 50A (For 60A module). |
MTBF | >800,000hrs , as per Bellecore std, or IEC61709 |
Isolation voltage | Input - PE; 1.5KVAC Output - PE; 1.5KVAC |
Degree of protection | IP20 |
Class of protection | Class II with PE connection |
ALARMS AND INDICATORS | |
---|---|
Indicators | DC Input OK: V in1 OK and V in2 OK (Green LED) 24V System; LED turns on when Vin1 & Vin2 > 18V ±5%, and not more than 30V 48V System; LED turns on when Vin1 & Vin2 > 36V ±5% and not more than 60V Outside these ranges the LED will turn OFF |
Input Voltage Alarm / Relay Contacts | 24V system: Vin1 & Vin2, >18V ± 5% or <30V 48V system: Vin1 & Vin2, >36V ± 5% or <60V |
MECHANICAL | |
---|---|
Case Cover | Aluminium |
Dimensions/Weight | 121 x 50 x 122mm, 375g 121 x 50 x 122mm, 515g |
Mounting Rail | TS35 DIN Rail in accordance with EN60715 |


Find the Right Model
Model Number | Input Voltage (Vac) | Output Voltage (Vdc) | Output Current (A) | ||
---|---|---|---|---|---|
![]() |
DRR-20A | 22...60Vdc | 24Vdc | 20A | |
![]() |
DRR-40A | 22...60Vdc | 24Vdc | 40A |
Need help finding the right product model?
