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Eaton B100S1C manual motor starter three-pole toggle switch transparent finish

Eaton

Eaton B100S1C Manual Motor Starter 3P 20A Toggle

SKU CH-ES34-MV1EC

Three-pole manual motor starter rated 20 A with toggle operation for 120 V to 600 V three-phase circuits

  • Product typeIndustrial Electrical Controls & Automation
  • Product colorTransparent
  • Three-phase motor control up to 20 A
  • Toggle operator for direct manual switching
  • Rated for 600 V AC maximum voltage
  • NEMA size M-1 starter handles 10 hp at 480 V
  • Three-pole design switches all phases simultaneously

Eaton B100S1C Manual Motor Starter

The Eaton B100S1C is a three-pole manual motor starter rated for 20 A and 600 V AC maximum. It uses a toggle operator and carries NEMA size M-1 construction for industrial control panels. Suitable for three-phase motor circuits up to 10 hp at 480 V or 600 V and single-phase loads up to 7 1/2 hp at 240 V.

Thermals noise and power

As an electromechanical switchgear device it generates no audible fan noise and draws negligible control power during normal operation. Heat rise comes only from contact resistance at the rated 20 A load across three phases. The transparent housing allows visual confirmation of contact status without opening the enclosure.

Sustained load behaviour

Under continuous rated current the starter maintains contact integrity across the full 600 V AC range without overload relay intervention. It is not suited for applications requiring automatic thermal overload protection or remote electrical operation. Builders needing integrated overload trips or contactor-based control should select a different device class.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $622.99
Pricier than about 90% of the 3,838 comparable items (median $41.99).

Specifications

Product
Brand nameEaton
Product typeIndustrial Electrical Controls & Automation
Product colorTransparent

Questions about this item

How do I wire the three poles and what mistake should I avoid with the 20 A rating?

Connect each of the three poles to the corresponding line conductors and ensure the load does not exceed 20 A at 600 V AC; the common error is undersizing the supply conductors for the 20 A toggle rating.

Which parts will need checking or replacement after extended service?

Inspect the toggle mechanism and contact tips periodically; replace the starter if the contacts show pitting or the toggle action becomes inconsistent.

At what point does the 10 hp three-phase limit at 480 V AC become the restricting factor?

The 10 hp rating at 480 V AC three-phase is the first limit reached under sustained heavy motor loads; exceeding it risks contact overheating.

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