Technical Data · Publication 520-TD001 · Rockwell Automation
PowerFlex 520-series AC Drive Technical Data — Bulletin 25A (PowerFlex 523) & 25B (PowerFlex 525)
Complete specifications for the Allen-Bradley PowerFlex 520-series of AC drives — covering both the PowerFlex 523 (Bulletin 25A series B) general-purpose drive and the PowerFlex 525 (Bulletin 25B) compact-flexibility drive. Power range 0.25–30 HP (0.2–22 kW) across four voltage classes (120V, 240V, 480V, 600V), five frame sizes (A–E), and normal-duty / heavy-duty ratings. This is Publication 520-TD001-EN-E, September 2025 revision.
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Specifications
Power Ratings — Series-wide
| HP range | 0.25 – 30 HP (0.2 – 22 kW) |
|---|---|
| Input voltage classes | 120V AC 1-ph · 240V AC 1-ph · 240V AC 3-ph · 480V AC 3-ph · 600V AC 3-ph |
| Frame sizes | A, B, C, D, E (both 523 and 525) |
| Input voltage tolerance | -15% / +10% |
| Input frequency tolerance | 47 – 63 Hz |
| Output frequency | 0 – 500 Hz (programmable) |
| Displacement power factor | 0.98 across entire speed range |
| Short circuit rating (SCCR) | 100,000 A Symmetrical |
| Transistor type | Insulated Gate Bipolar Transistor (IGBT) |
| Efficiency | 97.5% typical |
Voltage-Class Line-up (catalog number structure)
| 120V 1-ph, 0–230V 3-ph out (V) | 1P6, 2P5, 4P8, 6P0 codes → 0.25 – 1.5 HP (Frames A & B) |
|---|---|
| 240V 1-ph, 0–230V 3-ph out (A) | 1P6, 2P5, 4P8, 8P0, 011 codes → 0.25 – 3 HP (Frames A & B) |
| 240V 3-ph, 0–230V 3-ph out (B) | 1P6, 2P5, 5P0, 8P0, 011, 017, 024, 032, 048, 062 codes → 0.25 – 20 HP (Frames A–E) |
| 480V 3-ph, 0–460V 3-ph out (D) | 1P4, 2P3, 4P0, 6P0, 010, 013, 017, 024, 030, 037, 043 codes → 0.5 – 30 HP (Frames A–E) |
| 600V 3-ph, 0–575V 3-ph out (E) | 0P9, 1P7, 3P0, 4P2, 6P6, 9P9, 012, 019, 022, 027, 032 codes → 0.5 – 25 HP (Frames A–E) |
| EMC filter option | N104 suffix = no internal filter; N114 suffix = integrated filter (meets EN 61800-3 Category C2 / C3) |
Control & Performance
| Motor-control methods | V/Hz · Sensorless Vector Control (SVC) · Economizer · Closed-loop Vector (525 only) · SM/IPM Permanent-Magnet (525 only) |
|---|---|
| Carrier frequency | 2 – 16 kHz (drive rating based on 4 kHz) |
| Speed regulation (V/Hz) | ±1% of base speed, 60:1 range |
| Speed regulation (SVC / Economizer) | ±0.5% of base speed, 100:1 range |
| Speed regulation w/ encoder (525) | ±0.1% of base speed, 1000:1 range (VVC) |
| PID loops | 523 = 1 loop · 525 = 2 independent loops |
| Integrated positioning | PointStop on both · StepLogic + simple motion control on 525 |
| Overload — normal duty | 110% for 60 s, 150% for 3 s (ratings above 15 kW / 20 HP, 480 V only) |
| Overload — heavy duty | 150% for 60 s, 180% (200% programmable) for 3 s |
| Accel / decel | 4 independently programmable ramps · 0 – 600 s in 0.01 s increments |
| Stop modes | Ramp · Coast · DC-Brake · Ramp-to-Stop |
Protection & Trip Points
| Bus overvoltage trip (480V class) | 810 V DC (equiv. 575 V AC incoming) |
|---|---|
| Bus undervoltage trip (480V class) | 390 V DC (equiv. 275 V AC incoming) |
| Power ride-through | 100 ms |
| Logic-control ride-through | 0.5 s minimum, 2 s typical |
| Overcurrent | 200% hardware limit · 300% instantaneous fault |
| Motor overload | Class 10, NEC article 430 · UL 508C File 29572 |
| Ground-fault trip | Phase-to-ground on drive output |
| Short-circuit trip | Phase-to-phase on drive output |
Control I/O — 523 vs 525
| Analog inputs | 523 = 1 unipolar (0–10V / 4–20 mA) · 525 = 2 isolated (−10 to +10V or 4–20 mA) |
|---|---|
| Digital inputs | 523 = 5 (4 programmable) · 525 = 7 (6 programmable) |
| Analog output | 1 non-isolated 0–10V or 4–20 mA (10-bit, scalable) |
| Relay outputs | 523 = 1 Form C · 525 = 2 (1 Form A + 1 Form B) |
| Opto outputs | 523 = none · 525 = 2 programmable (30V DC / 50 mA non-inductive) |
| Pulse-train input | Shared with a digital input · 0 – 100 kHz (open-collector transistor) |
| Encoder input (525 only) | Incremental quadrature, dual-channel · 5/12/24V auto-detect · up to 250 kHz |
Environmental Specifications
| Operating temperature (no derating) | −20 to +50 °C (−4 to +122 °F) |
|---|---|
| Operating temperature (with derating / fan kit) | −20 to +60 °C (up to +70 °C with Control Module Fan kit) |
| Storage temperature (Frames A–D) | −40 to +85 °C (−40 to +185 °F) |
| Storage temperature (Frame E) | −40 to +70 °C (−40 to +158 °F) |
| Relative humidity | 0 – 95% non-condensing |
| Altitude (no derating) | 1000 m (3300 ft) max |
| Altitude (with derating) | 4000 m (13,200 ft) max · 2000 m for 600V drives |
| Shock / vibration — operating | Frames A–D: 15 g shock / 2 g vibration · Frame E: 15 g / 1.5 g |
| Shock / vibration — transport | All frames: 30 g shock / 2.5 g vibration |
| Sound pressure @ 1 m | Frames A–B: 53 dBA · C: 57 dBA · D: 64 dBA · E: 68 dBA |
| Pollution degree | IEC 60721-3-3 level 3C2 (chemical & gases) |
Physical — Frame Dimensions & Weight
| Frame A | 72 × 152 × 172 mm (2.83 × 5.98 × 6.77 in) · 1.1 kg (2.4 lb) |
|---|---|
| Frame B | 87 × 180 × 172 mm (3.43 × 7.09 × 6.77 in) · 1.6 kg (3.5 lb) |
| Frame C | 109 × 220 × 184 mm (4.29 × 8.66 × 7.24 in) · 2.3 kg (5.0 lb) |
| Frame D | 130 × 260 × 212 mm (5.12 × 10.24 × 8.35 in) · 3.9 kg (8.6 lb) |
| Frame E | 185 × 300 × 279 mm (7.28 × 11.81 × 10.98 in) · 12.9 kg (28.4 lb) |
| Mounting screw torque | Frames A–C: M5, 1.56–1.96 N·m (14–17 lb·in) · Frame D: M5, 2.45–2.94 N·m (22–26 lb·in) · Frame E: M8, 6.0–7.4 N·m (53–65 lb·in) |
| Zero-stacking | Allowed up to 45 °C (113 °F) ambient |
| Enclosure rating | IP20 / NEMA Open (standard); IP30 / NEMA UL Type 1 conduit-box kit optional |
Safety (PowerFlex 525 only)
| Safe Torque Off (STO) | Built-in, independently certified |
|---|---|
| Functional safety ratings | ISO 13849-1 SIL 2 / PL d / Cat 3 · IEC 61508 · EN 61800-5-2 · EN 62061 · EN 60204-1 |
| ATEX | Directive 2014/34/EU · Group II Cat. (2)GD · when used with ATEX-approved motors |
| UKCA (2016 No. 1107) | Potentially-Explosive-Atmospheres Regulations · Group II Cat. (2)GD |
Catalog Number Format
How to read an Allen-Bradley 25A / 25B catalog number. Each position encodes a specific configuration attribute.
Position
Meaning
Example
25A / 25B
Drive family — 25A = PowerFlex 523, 25B = PowerFlex 525
25B = PowerFlex 525
-
Dash separator
—
V/A/B/D/E
Voltage rating & phase: V = 120V 1-ph · A = 240V 1-ph · B = 240V 3-ph · D = 480V 3-ph · E = 600V 3-ph
D = 480V 3-phase input
xxx (e.g., 2P3)
Output current code — maps to rated output amps. 'P' stands in for decimal point (2P3 = 2.3 A)
2P3 = 2.3 A → 1 HP @ 480V
N
Enclosure — N = IP20 NEMA/Open chassis
N = IP20 open
1
Interface Module — 1 = Standard integrated HIM/LCD
1 = Standard HIM
0/1
EMC emission class — 0 = no internal filter · 1 = integrated filter (EN 61800-3 Cat. C2/C3)
0 = no filter (N104 suffix); 1 = filter (N114 suffix)
4
Braking option — 4 = Standard integral brake IGBT (connect external resistor)
4 = Standard integral brake transistor
- -
Two trailing dashes reserved for future options (currently unpopulated)
— —
Communication Protocols
Supported industrial networks and field buses for the products covered by this publication.
EtherNet/IP (embedded) PowerFlex 525 only · single-port 10/100 Mbps built in
EtherNet/IP (dual-port option card) DLR-capable for ring topologies; 523 and 525 · fault-tolerant connectivity
RS-485 / DSI (integral) Both 523 and 525 · multi-drop configuration, up to 31 drives
DeviceNet via 22-COMM-D option card
PROFIBUS DP via 22-COMM-P option card
Modbus RTU native on RS-485 port, 03 / 06 function codes
Modbus TCP via the embedded or option-card Ethernet port
ControlNet via 22-COMM-C option card
BACnet MS/TP via 22-COMM-N option card
LonWorks via 22-COMM-L option card
Certifications & Compliance
UL 508C Listed (File 29572) + UL 61800-5-1
cUL — CSA C22.2 No. 274 + No. 14-17
CE Marked — EN 61800-3, EN 61800-5-1 (LVD, EMC, ATEX, MD, RoHS)
UKCA — UK 2016 No. 1101 / 1091 / 1107 / 2008 No. 1597 / 2012 No. 3032 / 2021 No. 745
RCM (Australia / New Zealand) — EN 61800-3
KCC (South Korea) — Article 58-2
EAC (Russia / Kazakhstan / Belarus)
TÜV Rheinland — ISO 13849-1 SIL 2 / PL d + IEC 61508 / EN 62061 (PowerFlex 525 only)
ATEX — 2014/34/EU Group II Cat. (2)GD (PowerFlex 525 only, with ATEX motor)
SEMI F47 — voltage-sag ride-through (IEC 61000-4-11, IEC 61000-4-34)
AC 156 / 2003 IBC — seismic qualification (Trentec tested)
Lloyd's Register Type Approval Cert. 12/10068(E1) (PowerFlex 525 only)
RoHS — 2011/65/EU
Ecodesign (EU) 2019/1781 — IE2 efficiency class (see PFLEX-TD003)
NFPA 70 (NEC) · NEMA ICS 7.1
Document Contents
Full PDF covers the following topics in detail:
- Complete catalog-number breakdown for Bulletin 25A (PowerFlex 523) and 25B (PowerFlex 525) — voltage class, current rating, enclosure, filter option, and braking code positions
- Full drive-ratings tables: HP, kW, output current, input voltage range, total watts loss, and frame size for every catalog number (25A-* and 25B-*)
- Output-current lookup tables for all four voltage classes (120V 1-ph, 240V 1-ph, 240V 3-ph, 480V 3-ph, 600V 3-ph) with both Normal-Duty and Heavy-Duty ratings
- Frame-A-through-E dimensional drawings, mounting dimensions, weights, and mounting-clearance requirements (vertical, horizontal, zero-stacking, and fan-kit configurations)
- Input and output electrical specifications — SCCR (100,000 A), over/undervoltage trip thresholds per voltage class, branch-circuit protection
- Environmental ratings — altitude derating curves, temperature ranges with/without Control Module Fan kit, humidity, shock/vibration per frame, sound levels
- Safe Torque Off (STO) certification details, wiring examples, and SIL 2/PL d ratings
- Communication specifications — embedded EtherNet/IP, RS-485/DSI, and 22-COMM option-card protocols (DeviceNet, PROFIBUS DP, ControlNet, BACnet, LonWorks)
- Encoder/pulse-train input specifications (PowerFlex 525 only)
- Fuses and circuit-breaker recommendations (Bussmann, Ferraz Shawmut, branch-circuit protection tables)
- Accessory compatibility — 22-COMM option cards, remote HIM (20-HIM-A6/C6S), dynamic brake resistors, EMC filters, reactors
In-Stock Products Covered by This Document
Every product below is in stock at our Charlotte, NC warehouse and covered by this publication. Ships same-day (orders before 4 PM ET) with 2.5-year warranty included.
25B-A4P8N104
Allen-Bradley 25B-A4P8N104 PowerFlex 525 AC Drive 1 HP
$549.99
25B-D010N104
Allen-Bradley 25B-D010N104 PowerFlex 525 AC Drive 5 HP
$579.99
25B-D013N104
Allen-Bradley 25B-D013N104 PowerFlex 525 AC Drive 7.5 HP
$669.99
25B-D017N104
Allen-Bradley 25B-D017N104 PowerFlex 525 AC Drive 10 HP
$739.99
25B-D024N104
Allen-Bradley 25B-D024N104 PowerFlex 525 AC Drive 15 HP
$949.99
25B-D030N104
Allen-Bradley 25B-D030N104 PowerFlex 525 AC Drive 20 HP
$1,149.99
25B-D1P4N104
Allen-Bradley 25B-D1P4N104 PowerFlex 525 AC Drive 0.5 HP
$403.36
25B-D2P3N104
Allen-Bradley 25B-D2P3N104 PowerFlex 525 AC Drive 1 HP
$359.99
Frequently Asked Questions
Does publication 520-TD001 cover both the PowerFlex 523 and PowerFlex 525?
Yes. 520-TD001 is the joint technical-data publication for the entire PowerFlex 520-series, which consists of the PowerFlex 523 (Bulletin 25A series B) general-purpose drive and the PowerFlex 525 (Bulletin 25B) compact-flexibility drive. Most specifications are identical across the two bulletins — the differences are called out explicitly in each table (a 523 column and a 525 column), and in the "Additional Features of PowerFlex 525 Drives" section of the PDF.
What's the catalog-number difference between PowerFlex 523 and PowerFlex 525?
Only the first three characters: 25A-* is a PowerFlex 523, 25B-* is a PowerFlex 525. All remaining positions (voltage, current rating, enclosure, EMC filter, HIM) use the same codes. So, for example, 25A-D2P3N104 and 25B-D2P3N104 are the 1 HP / 480V / IP20 / no-filter variants of each drive — identical power ratings, mechanically identical frame A enclosure, different feature set (the 525 adds embedded EtherNet/IP, two PID loops, permanent-magnet motor control, and Safe Torque Off).
What voltage and power range does the PowerFlex 520-series support?
0.25 – 30 HP (0.2 – 22 kW) across five voltage classes: 120V single-phase input, 240V single-phase input, 240V three-phase input, 480V three-phase input, and 600V three-phase input. The full catalog-number to output-current-rating map is published in 520-TD001, pages 9 and 14–15, split by voltage class with both Normal-Duty and Heavy-Duty HP/kW ratings for every code.
How do I decode a catalog number like 25B-D2P3N104?
Left-to-right: 25B = PowerFlex 525 family; D = 480V 3-phase input; 2P3 = 2.3 A output current (where 'P' substitutes for the decimal point), which is the 1 HP / 0.75 kW rating on a 480V drive; N = IP20 open chassis; 1 = standard HIM/interface module; 0 = no internal EMC filter; 4 = standard integral brake transistor. A full position-by- position breakdown is on page 9 of 520-TD001.
What frame sizes are available and how big are they?
Five frames: A, B, C, D, E. Approximate weights run from 1.1 kg (Frame A, about the size of a thick paperback book) to 12.9 kg (Frame E, a small floor-standing unit). Exact dimensions: Frame A 72×152×172 mm, Frame B 87×180×172 mm, Frame C 109×220×184 mm, Frame D 130×260×212 mm, Frame E 185×300×279 mm. Mounting hole centers and the 50 mm (2 in.) clearance envelope are specified on pages 15–16 of 520-TD001.
Does the PowerFlex 525 support EtherNet/IP without an add-on card?
Yes — every PowerFlex 525 (Bulletin 25B) ships with a built-in single-port 10/100 Mbps EtherNet/IP adapter. The PowerFlex 523 does NOT have embedded Ethernet; it uses the optional 25-COMM-E2P dual-port card or one of the 22-COMM-series cards for industrial networking. Both drives include integral RS-485/DSI for Modbus RTU.
Is Safe Torque Off (STO) standard on the PowerFlex 525?
Yes — STO is a built-in feature on every PowerFlex 525, independently certified by TÜV Rheinland to ISO 13849-1 SIL 2 / PL d / Cat 3 and IEC 61508. It removes rotational power without powering down the drive, reducing wiring and installation space. STO is NOT available on the PowerFlex 523 — for safety-rated stop on a 523, use an external safety relay.
What's the short-circuit current rating (SCCR)?
100,000 A symmetrical across the entire PowerFlex 520-series. The actual short-circuit rating depends on the AIC rating of the installed fuse or circuit breaker — branch-circuit protection tables are on pages 25–32 of 520-TD001.
What's the difference between Normal-Duty and Heavy-Duty ratings?
Normal-Duty allows 110% overload for 60 seconds or 150% for 3 seconds and is the default rating for most centrifugal-fan / pump / conveyor loads. Heavy-Duty allows 150% for 60 seconds or 180% (200% programmable) for 3 seconds and is required for high-inertia / high-starting-torque loads. Normal-Duty is only published on 480V drives 15 kW (20 HP) and above; below that threshold, only the Heavy-Duty rating is listed.
Can I install a PowerFlex 520-series drive with zero clearance between drives?
Yes, up to 45 °C (113 °F) ambient, the drives can be zero-stacked side-by-side. Above 45 °C (or when using the Control Module Fan kit), specific clearance requirements apply — Frame E with the fan kit requires 95 mm (3.7 in.) top clearance and 12 mm (0.5 in.) between drives. See page 16 of 520-TD001 for the full clearance matrix.
Can the PowerFlex 520-series ride through line-voltage dips?
Yes. The drive supports 100 ms power ride-through and 2 s typical logic-control ride-through out of the box. Additionally, a selectable 1/2-line-voltage operating mode allows continued output during brown-out conditions, and enhanced inertia ride-through provides further low-voltage mitigation. The series is certified to SEMI F47 for semiconductor-fab voltage-sag immunity.
Where can I find the full PowerFlex 520-series wiring diagrams and parameter reference?
Wiring diagrams live in publication 520-IN001 (Installation Instructions). Parameter descriptions, programming examples, and start-up are covered in publication 520-UM001 (User Manual). 520-TD001 (this document) focuses on ratings, dimensions, certifications, and selection data.
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