We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Grey rectangular three-pole breaker with toggle switches and bolt-on lugs

SQUARE D

SQUARE D EDB34025 circuit breaker 25A 3 pole

SKU CH-RBYW-G5A2F

Three-pole miniature circuit breaker rated 25 A at 277/480 V AC with 18 kA interrupting capacity for Square D NF panelboards

  • Protects three-phase circuits with 25 A rating
  • 18 kA interrupting capacity at 277/480 V AC
  • Bolt-on mounting fits Square D NF panelboards
  • Toggle actuator gives clear on/off indication
  • Operates up to 104 °F ambient temperature

Square D EDB34025 25 A Three-Pole Breaker

This Square D EDB34025 is a bolt-on miniature circuit breaker rated at 25 A for three-phase circuits. It fits Square D NF panelboards using the EDB frame size of 125 A. The breaker provides standard overcurrent protection for commercial and industrial electrical distribution.

Thermal Performance and Power Ratings

The breaker carries an interrupting rating of 18 kA at 277/480 V AC and 125 V DC. It is designed to operate in ambient temperatures up to 104 degrees Fahrenheit. The toggle actuator provides manual switching for circuit isolation and reset.

NF Panelboard Compatibility and Frame Size

This unit is specifically built for Square D NF panelboards and uses a lug terminal connection. The EDB frame size of 125 A defines the physical and electrical envelope for this 25 A device. Builders using other panelboard series or frame sizes cannot use this breaker.

Highlights

  • Protects three-phase circuits with 25 A rating
  • 18 kA interrupting capacity at 277/480 V AC
  • Bolt-on mounting fits Square D NF panelboards
  • Toggle actuator gives clear on/off indication
  • Operates up to 104 °F ambient temperature

Specifications

BrandSQUARE D

Questions about this item

How do I install the SQUARE D EDB34025 breaker in an NF panelboard, and what step is often missed?

Bolt the breaker onto the NF panelboard bus using the lug terminals; the step often missed is torquing the lug screws to the panelboard manufacturer's specified value to prevent overheating.

What maintenance or replacement will the EDB34025 need over time?

No scheduled maintenance is required; replace the breaker if it trips repeatedly without overload, shows discoloration at the lugs, or fails to reset after clearing a fault.

What is the first limit reached under sustained heavy load on this 25 A, 3-pole breaker?

The thermal trip element will open the circuit when current exceeds 25 A for a sustained period, which is the first protective limit reached under continuous overcurrent conditions.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.