Overview
The GE Spec-Setter TH4321 is a 30 A, 240 VAC, three-pole, four-wire, three-phase fusible heavy-duty safety switch for indoor installations requiring a NEMA 1 enclosure. It accepts Class H, K, or R fuses and provides a visible equipment-disconnect point for source-approved applications.
Key Features
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Safety: Quick-make/quick-break operation and full-cover interlocks support controlled switching, while UL, cUL, CSA, and GSA certifications document the exact model's recognized compliance.
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Installation: Terminals accept 14–8 AWG copper or 12–8 AWG aluminum conductors rated for 60/75°C wiring.
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Compatibility: Three-pole, four-wire, three-phase construction is rated 30 A at 240 VAC and supports Class H, K, or R fuses.
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Performance: The exact model is rated 3 hp with standard fuses or 7.5 hp with time-delay fuses at 240 V three-phase. Approximate dimensions are 10.3 in high × 6.3 in wide × 3.3 in deep; weight is 6 lb.
Specifications
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Catalog number: TH4321
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Series and duty: GE Spec-Setter heavy-duty safety switch
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Current and voltage: 30 A, 240 V AC
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Configuration: Fusible, 3-pole, 4-wire, 3-phase
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Enclosure: NEMA 1 indoor
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Fuse compatibility: Class H, K, or R
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Conductor range: 14–8 AWG copper or 12–8 AWG aluminum, 60/75°C rated wiring
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Motor rating: 3 hp with standard fuses or 7.5 hp with time-delay fuses at 240 V, 3-phase
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Approximate size and weight: 10.3 × 6.3 × 3.3 in; 6 lb
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Certifications: UL, cUL, CSA, and GSA
Common Applications
- Indoor motor and HVAC equipment disconnects requiring a 30 A, 240 VAC fusible three-pole switch.
- Commercial and industrial branch-equipment isolation using Class H, K, or R fuses.
- Code-compliant indoor disconnect installations where the manufacturer specifies the TH4321 configuration.
