ABB SACE Isomax S3 | 20A Molded Case Circuit Breaker SKU: S3H020TW
- 20A molded case circuit breaker (MCCB), SACE Isomax S3H frame
- 3-pole, 600VAC rated, thermal-magnetic trip
- High interrupting capacity — S3H performance class
- UL 489 and CSA C22.2 No. 5.1 listed
- Part of ABB’s SACE Isomax S series for commercial and industrial power distribution
Key Features:
- 20A continuous current rating, S3H frame (150A frame class), 3-pole configuration
- Rated operational voltage: 600VAC / 250VDC
- S3H performance class — high interrupting capacity within the S3 Isomax frame family
- Thermal-magnetic trip unit providing overload (long-time) and short-circuit (instantaneous) protection
- Fully enclosed silver alloy contacts for high withstand rating and reliable operation
- Double insulation between live power parts and front operator-accessible surfaces for enhanced safety
- Bolt-on mounting configuration for secure panel installation
- Suitable for both power distribution and branch circuit protection applications
- Wide range of compatible accessories including shunt trips, auxiliary contacts, and alarm contacts
- Certified to UL 489 and CSA C22.2 No. 5.1 standards
- Part of the ABB SACE Isomax S family — a unified series sharing common overall dimensions, mounting methods, and accessory compatibility across all frame sizes
Applications:
- Commercial and industrial power distribution panels
- Generator set output protection and switchgear
- Motor control centers (MCC)
- Branch circuit and feeder protection
- Transformer and capacitor protection
Electrical Specifications:
- Rated Current: 20A
- Frame Class: S3H (150A frame)
- Poles: 3
- Rated Voltage: 600VAC / 250VDC
- Trip Type: Thermal-Magnetic
- Standards: UL 489, CSA C22.2 No. 5.1
