Phoenix STEP Series: Industrial Power Backup, Supplies & Protection Modules - Selection Guide
Overview
Phoenix STEP Series encompasses industrial-grade power backup systems (UPS), switch-mode power supplies, protection diodes, and lithium-ion batteries. Designed for automation systems, it delivers reliable power backup during outages, stable voltage conversion, and circuit protection—critical for safeguarding controllers, sensors, and critical field devices. With compact designs, easy integration, and robust performance, it’s ideal for scenarios requiring uninterrupted power and overload protection.
Model & Core Parameter Table
| Model No. |
Product Name |
Product Type |
Input Specification |
Output Specification |
Key Features |
Application Scenario |
| 1081430 |
STEP-UPS/24DC/24DC/3/46WH |
UPS Backup Module |
24V DC |
24V DC, 3A, 46WH capacity |
Built-in battery, backup power |
24V device outage protection |
| 2868703 |
STEP-UPS/24DC/24DC/3 |
UPS Backup Module |
24V DC |
24V DC, 3A |
External battery compatible |
24V system extended backup |
| 1082548 |
STEP-UPS/12DC/12DC/4/46WH |
UPS Backup Module |
12V DC |
12V DC, 4A, 46WH capacity |
Built-in battery, plug-and-play |
12V sensor/controller backup |
| 2868693 |
STEP-UPS/12DC/12DC/4 |
UPS Backup Module |
12V DC |
12V DC, 4A |
External battery support |
12V system custom backup |
| 2938947 |
STEP-PS-100-240AC/24DC/1.5 |
Switching Power Supply |
100-240V AC |
24V DC, 1.5A |
Wide AC input, stable output |
24V low-power device supply |
| 2938921 |
STEP-PS-100-240AC/12DC/3 |
Switching Power Supply |
100-240V AC |
12V DC, 3A |
High-current for 12V systems |
12V medium-load device supply |
| 2868606 |
STEP-DIODE/5-24DC/2X5/1X10 |
Diode Protection Module |
5-24V DC |
2×5A / 1×10A |
Reverse polarity/overload protection |
Circuit protection for power supplies |
| 2320364 |
STEP-BAT/LIPO/18.5DC/1.4AH |
LiPo Battery |
N/A (Storage) |
18.5V DC, 1.4AH |
Lightweight, high energy density |
UPS external backup battery |
| 1081355 |
STEP-BAT/LI-ION/18.5DC/46WH |
Li-Ion Battery |
N/A (Storage) |
18.5V DC, 46WH |
Long cycle life |
Extended UPS backup power |
| 1283937 |
STEP3-DIODE/5-24DC/2X5/1X10/PT |
Diode Protection Module |
5-24V DC |
2×5A / 1×10A |
Status indicator (PT) |
Monitorable circuit protection |
Simplified Model Code Interpretation
- STEP-UPS: UPS backup module (provides uninterrupted power during outages)
- STEP-PS: Switching power supply (AC-to-DC voltage conversion)
- STEP-DIODE/STEP3-DIODE: Diode protection module (prevents reverse current/overload)
- STEP-BAT: Backup battery (LiPo/Li-Ion for UPS power extension)
- Key Parameters:
- Input/Output Voltage: e.g., 24DC/24DC = 24V DC input, 24V DC output
- Current (A): e.g., 3 = 3A output current
- Capacity: e.g., 46WH (watt-hour) / 1.4AH (ampere-hour) = energy storage
- PT: Status indicator (for monitoring protection module status)
- LiPo/LI-ION: Battery chemistry type
Core Specifications (By Product Category)
1. UPS Backup Modules
| Spec Item |
Details |
| Operating Temperature |
-10°C~60°C |
| Backup Time |
Dependent on load (e.g., 46WH model powers 3A device for ~15 hours) |
| Protection Functions |
Short-circuit, overcurrent protection |
| Installation |
35mm DIN rail mounting |
| Compatibility |
Works with Phoenix STEP batteries (external models) |
2. Switching Power Supplies
| Spec Item |
Details |
| Input Voltage Range |
100~240V AC (global compatibility) |
| Output Regulation |
≤±2% (stable voltage, low ripple) |
| Efficiency |
Up to 88% (energy-saving) |
| Operating Temperature |
-25°C~70°C |
| Protection Functions |
Overvoltage, short-circuit protection |
3. Diode Protection Modules
| Spec Item |
Details |
| Voltage Range |
5~24V DC (wide compatibility) |
| Current Rating |
2×5A (normal) / 1×10A (peak) |
| Protection Type |
Reverse polarity, overload, short-circuit |
| Status Indication |
PT models: Visual LED for protection status |
| Housing Material |
Flame-retardant plastic (UL94 V-0) |
4. Backup Batteries
| Spec Item |
Details |
| Chemistry |
LiPo (lightweight) / Li-Ion (long life) |
| Nominal Voltage |
18.5V DC (matches STEP-UPS modules) |
| Capacity |
1.4AH (compact) / 46WH (high capacity) |
| Charging Cycles |
≥500 cycles (maintains 80% capacity) |
| Storage Temperature |
-20°C~45°C |
Intuitive Selection Table (At-a-Glance)
| Application Scenario |
Recommended Product Type |
Key Model Examples |
Core Reason |
| 24V device outage protection (built-in battery) |
STEP-UPS (with battery) |
1081430 (24DC/24DC/3/46WH) |
Plug-and-play, 46WH capacity for instant backup |
| 12V sensor/controller backup (external battery) |
STEP-UPS (without battery) + STEP-BAT |
2868693 (12DC/12DC/4) + 1081355 (Li-Ion 46WH) |
Customizable backup time with high-capacity battery |
| 24V low-power device AC-to-DC supply |
STEP-PS Switching Power Supply |
2938947 (100-240AC/24DC/1.5) |
Wide AC input, stable 1.5A output |
| 12V medium-load device power supply |
STEP-PS Switching Power Supply |
2938921 (100-240AC/12DC/3) |
3A high current for 12V systems |
| Circuit reverse current/overload protection (monitorable) |
STEP3-DIODE (PT) |
1283937 (5-24DC/2X5/1X10/PT) |
Status indicator for easy troubleshooting |
| Circuit protection (basic) |
STEP-DIODE |
2868606 (5-24DC/2X5/1X10) |
Cost-effective, wide voltage compatibility |
| UPS backup extension (high capacity) |
STEP-BAT (Li-Ion) |
1081355 (18.5DC/46WH) |
46WH capacity for long backup time |
| Compact UPS battery replacement |
STEP-BAT (LiPo) |
2320364 (18.5DC/1.4AH) |
Lightweight, easy to install |
Key Advantages
- Uninterrupted Power: STEP-UPS modules prevent data loss or system shutdown during power outages.
- Stable Conversion: STEP-PS supplies deliver consistent voltage with low ripple, protecting sensitive devices.
- Reliable Protection: Diode modules block reverse current and overloads, extending circuit lifespan.
- Flexible Backup: Interchangeable LiPo/Li-Ion batteries let you customize backup duration.
- Easy Integration: DIN rail mounting and plug-and-play design simplify installation in control cabinets.
Important Notes:
- Voltage Matching: Ensure UPS/PS output voltage matches the device’s rated voltage (e.g., 12V devices → 12V UPS/PS).
- Battery Compatibility: External STEP-UPS models (without built-in battery) only work with Phoenix STEP-BAT series (18.5V DC).
- Backup Time Calculation: Backup duration = Battery capacity (WH) ÷ Device power (W) (add 20% margin for reliability).
- Protection Module Sizing: Choose diode modules based on maximum circuit current (e.g., 10A peak load → 2868606/1283937).
