Schaedler Yesco | Main Breaker Kits

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SIEM MBK100A

Part #SIEM MBK100A 100AMP MAIN BREAKER KIT FOR USE IN ULTIMATE LOADCENTERS 1PHASE Siemens Main Breaker Kit, Type ST Low Voltage Transfer Switch, 120/240 VAC, 100 A, 22 kA Interrupt, EQ Frame, Thermal/Magnetic Trip, 2 Pole, 1 ph, NEMA 1 Enclosure, Bolt-On/P

MFG #MBK100A

11 in Stock. More available 01/08/2026

$29464.85/PL

Regular Price: $184464.00/PL, you save $154,999.15 (84%)

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SIEM MBK200

Part #SIEM MBK200 200AMP MAIN BREAKER KIT FOR USE IN EQIII LOADCENTERS 1PHASE (OLDER STYLE) LOOKS LIKE A 4POLE Siemens Molded Case Circuit Breaker, Type EQ, 120/240 VAC, 200 A, 22 kA Interrupt, Thermal/Magnetic Trip, 2 Pole, 1 ph, Bolt-On Connection, 6.5 i

MFG #MBK200

4 in Stock. More available 12/20/2025 and 01/08/2026

$1152.89/BX

Regular Price: $8156.00/BX, you save $7,003.11 (86%)

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SIEM MBK200A

Part #SIEM MBK200A 200AMP MAIN BREAKER KIT FOR USE IN ULTIMATE LOADCENTERS 1PHASE (NEW STYLE) EQ8695 Siemens Molded Case Circuit Breaker, Type EQ, 120/240 VAC, 200 A, 22 kA Interrupt, EQ Frame, LI/Thermal Magnetic Trip, 2 Pole, 1 ph, Bolt-On Connection, 6.

MFG #MBK200A

9 in Stock. More available 01/08/2026

$294.70/BX

Regular Price: $1845.00/BX, you save $1,550.30 (84%)

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