FRS-12__ERS-12_package_feed_rail_electro_rail_watermark_003

FRS-12__ERS-12_package_feed_rail_electro_rail_watermark_002

FeedRail Electro-Rail FRS-12 and ERS-12 3 pole, 5 amp Trolley Spare Spart

The Feedrail® Electro-Rail system is a heavy-duty industrial trolley busway used to provide continuous, mobile power to moving equipment like cranes, hoists, assembly lines, and high-intensity lighting.

The FRS-12 and ERS-12 are two of the most common configurations within the “100 Ampere” series. While they share the same foundational architecture, they are distinguished by their mounting styles and specific industrial applications.

Key Features & Comparison

Feature	Feedrail FRS-12	Feedrail ERS-12
Track Style	Standard / Flush Mount	Recessed Mount
Amperage	100 Amps	100 Amps
Voltage	Up to 600V AC / 250V DC	Up to 600V AC / 250V DC
Enclosure	13-gauge galvanized steel	13-gauge galvanized steel
Best For	Open-track hoists, cranes, and portable tools.	Ceiling-integrated lighting and power systems.

FRS-12 vs. ERS-12: The Main Difference

The FRS-12 is the “standard” workhorse. It is typically mounted to beams or ceilings where the entire track is visible.

The ERS-12 (the “E” often signifying “Embedded” or “Extended flange”) features a specialized flange designed for flush-mounting. This makes it the go-to choice for clean-room environments or modern architectural lighting where you want the power source hidden within the ceiling line rather than hanging below it.

Category: General Tags: 5 amp Trolley spare part, FeedRail Electro-Rail FRS-12 and ERS-12 3 pole

Description

The FRS-12 and ERS-12 are essentially the same 3-pole, 5-amp trolley, but their prefixes denote the specific track system they are compatible with.

Quick Specs: FRS-12 & ERS-12 Trolleys

Both units are 3-pole, 5-amp non-fusible trolleys featuring copper graphite roller contacts. They are designed to provide a continuous, moving electrical connection within the track.

Voltage: 300V AC/DC.
Contacts: Copper graphite rollers (best for speeds under 150 feet per minute).
Capacity: 5 Amps continuous.
Common Use: Powering industrial sewing machines, portable hand tools, and moving test equipment.

System Differences: FRS vs. ERS Tracks

While the trolleys are often cross-listed as the same part (the FRS-12 often fits both systems), the tracks they run in have distinct mounting profiles:

System	Feedrail (FRS)	Electro-Rail (ERS)
Mounting Style	Standard/Surface Mount	Flush/Recessed Mount
Track Profile	Exposed galvanized steel housing; typically hung from hangers.	Designed with “flanges” to be embedded in or flush with a ceiling.
Application	Open factories, warehouses, and overhead cranes.	Lighting systems, retail ceilings, and clean rooms.