Description
Product Overview
SELA36AI0060 is a 3-pole GE Spectra RMS SE150 frame molded case circuit breaker, fitted with magnetic-only trip unit (Mag-Break), rated 60A / 600VAC. It is designed specifically as a motor short-circuit protector, delivering instantaneous short-circuit protection for motor feeders, paired separately with motor overload relays. GE Spectra RMS series uses solid-state RMS current sensing, and accepts interchangeable rating plugs. Original GE production discontinued; available as new surplus or fully tested refurbished spare parts for industrial motor control centers and power distribution cabinets.
Technical Specifications
| Item | Parameter |
|---|---|
| Manufacturer | General Electric (GE, now ABB Spectra RMS) |
| Part Number | SELA36AI0060 |
| Product Type | Molded Case Circuit Breaker, Motor Short-Circuit Protector |
| Frame | SE150 |
| Poles | 3 Pole |
| Rated Continuous Current | 60 A |
| Rated Operational Voltage | 600 VAC, 50/60Hz |
| Trip Unit | AI = Magnetic-only instantaneous trip (Mag-Break, no thermal overload) |
| Interrupting Rating | 65 kA @480VAC; 25 kA @600VAC |
| Rating Plug | SRPE60A50 (interchangeable front rating plug) |
| Mounting | Panel / MCC bucket mount |
| Enclosure | Molded thermoplastic case |
| Operating Temperature | -20 °C ~ +40 °C |
| Humidity | 5%–95% RH, non-condensing |
| Certifications | UL489, CSA |
| Reverse Feed Capability | Yes |
Key Features
- Magnetic-Only Trip Design: Instantaneous short-circuit protection only. Thermal overload protection must be implemented by external motor overload relay. Optimized for motor feeder applications.
- Spectra RMS Solid State Sensing: RMS measurement accurately detects fault currents under distorted waveforms common with motor loads.
- Interchangeable Rating Plug: Front-mounted rating plug allows field adjustment of ampere rating without replacing the whole breaker body.
- High Short-Circuit Withstand: 65kA interrupt rating at 480V for high-fault-current MCC environments.
- Reverse Feed Rated: Safe for applications where source power feeds from load side of breaker.
- Clear Visual Trip Indication: Front handle shows ON/OFF/TRIP status for quick local diagnostics.
- Legacy MCC Spare: Obsolete GE model widely used in older power plant, petrochemical and factory motor control centers.
Applications
- Motor Control Center (MCC) motor feeder short-circuit protection
- Pump, fan and conveyor motor circuits
- Petrochemical and power station auxiliary motor cabinets
- Industrial plant legacy distribution panel maintenance and replacement
Installation & Maintenance Notes
- Lockout-tagout mandatory before breaker removal or installation.
- Torque all cable lugs to manufacturer specification to avoid hot spots.
- This breaker provides short-circuit protection only. External overload relay is required for motor winding overload protection.
- Verify rating plug matches required amp rating before commissioning.
- After a short-circuit trip, inspect breaker contacts and test function before re-energizing; replace if internal damage is identified.
- Confirm full part number, pole count, voltage rating and trip type match during spare replacement.
FAQ
Q: What does AI suffix mean? A: AI = Magnetic-only instantaneous trip (Mag-Break). No thermal overload trip inside this breaker.
Q: What rating plug is used for SELA36AI0060? A: SRPE60A50 rating plug for 60A configuration.
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