Phoenix Contact Energy Storage 25A 4Ah 24V (1274117)

In industrial control cabinets and automation systems, the Phoenix Contact Energy Storage 25A 4Ah 24V provides reliable backup power for critical loads during brief interruptions or peak demands. This DIN-rail mountable supercapacitor storage unit delivers 24 V DC output with a nominal capacity of 4 Ah and a maximum discharge current of 25 A, ensuring stable operation of connected devices.

Key specifications

• Energy storage technology: Double-layer capacitor (supercapacitor)
• Nominal input voltage: 24 V DC (range 22.5–30 V DC)
• Nominal output voltage: 24 V DC (range 18–30 V DC)
• Nominal capacity: 4 Ah
• Max. discharge/charge current: 25 A
• Operating temperature: -25 °C to 60 °C
• Mounting: DIN rail
• Connection: Screw connection
• Protection class: IP20
• Service life: >20 years at 20 °C / 500,000 cycles
• Efficiency: >99%
• Status indication: LED (charge status, function)
• Parallel operation: Yes

Why choose it

Supercapacitor technology offers maintenance-free operation, high cycle life, and rapid charge/discharge capability, making it ideal for applications requiring frequent short-term power bridging or peak load support.

Ideal use cases

• Backup power for PLCs, HMIs, and industrial PCs during brief voltage dips
• Peak load buffering in 24 V DC supply systems
• Energy storage for regenerative braking or short-term energy recovery

Good to know

The unit supports parallel operation for increased capacity or redundancy. It is designed for DIN rail mounting in control cabinets with IP20 protection.