Overview
The Siemens ED63A003 is a Type ED molded-case motor circuit interrupter engineered for single-line industrial motor protection. Operating at 600VAC (50/60 Hz) and 250VDC, this 3-pole, 3-ampere device combines instantaneous magnetic-only trip logic with a compact Sentron-series form factor. Its electronic sensing and bolt-on construction make it ideal for retrofit and new system integration in standard motor control centers and panelboards.
Key Features
- Instantaneous Magnetic Protection: Fast response to short circuits via 10–35A magnetic trip range; no thermal delay for motor-starting transients.
- 3-Pole Configuration: Simultaneous protection on all three phases; ideal for three-phase motor loads between 0.76 and 3.18 A full-load amperage.
- Bolt-On Design: Drop-in compatible with standard IEC/NEMA mounting rails and panel slots; no complicated rewiring required.
- UL 489 & CSA Certified: Meets North American safety standards for industrial circuit protection in residential, commercial, and industrial environments.
- Compact Footprint: 3" W × 4" D × 6.34" H; fits congested control enclosures without extensive reconfiguration.
Technical Specifications
- Rated Voltage: 600 VAC @ 50/60 Hz, 250 VDC
- Rated Current: 3 Ampere per pole
- Interrupting Capacity: 18 kAIC @ 600V; 25 kAIC @ 480V
- Trip Function: Instantaneous magnetic only; range 10–35 A
- Motor FLA Range: 0.76–3.18 Ampere
- Poles: 3 Pole (3-Phase)
- Mounting: Bolt-On
- Terminal Type: Lugs not included (compatible with standard SA1 accessory lugs)
- Certifications: UL 489, CSA C22.2
- Series: Sentron ED6-ETI Type ED
- Dimensions: 3" W × 4" D × 6.34" H
- UPC: 783643210806
Typical Applications
The ED63A003 is specified in motor control circuits where instantaneous protection is the design requirement:
- Small fractional-to-low-horsepower motor starters (≤3 A @ 600V).
- OEM equipment protection in industrial packaging, conveyor, and material-handling systems.
- Retrofit upgrades replacing legacy ITE or Federal Pacific motor protectors.
- Remote or outdoor enclosures where fast short-circuit clearing reduces arc-flash risk.
- UPS and backup power distribution for critical loads.
Compatibility & Replacements
The Siemens ED63A003 replaces earlier ITE brand motor circuit interrupters (ITE acquired by Siemens) and is compatible with most standard 3-pole power distribution modules. Common equivalent models in the Sentron ED6 family include the ED63A010 (10A) and ED63A020 (20A) for higher-current applications. Consult the control-center or panelboard OEM manual to verify bolt-on compatibility before ordering. Terminal lugs (SA1E025 or equivalent) must be purchased separately if not pre-installed by the OEM.
