Technical Data · Publication 193-TD001 · Rockwell Automation
Bulletin 193 Overload Relay Technical Data
Specifications, catalog-number breakdown, and selection data for the Allen-Bradley Bulletin 193 overload-relay family — covering the E1 Plus standalone solid-state relay, the E3 Plus / E200 / E300 modular communicating overload relays, and the 193-K / 193-T1 bimetallic relays. Mirrored from Rockwell Automation Publications 193-TD001, 193-TD006, and 193-TD010.
Specifications
Protection Functions
| Thermal overload | Trip Class 5…30 (adjustable on E1 Plus / E3 Plus / E200 / E300); fixed Class 10 on 193-K and 193-T1 bimetallic. |
|---|---|
| Phase loss | Configurable on electronic relays with adjustable time delay 0.1 – 25.0 s; factory trip level set at 100% current imbalance. Phase-loss sensitive on 193-K / 193-T1 bimetallic. |
| Ground (earth) fault | Zero-sequence core-balance sensing built into E1 Plus / E3 Plus / E200 / E300; trip and warning settings 20 mA … 5.0 A. For devices rated >200 A and for detection <0.5 A, an external core-balance CT (193-CBCT_) is required. |
| Current imbalance (asymmetry) | Trip and warning settings adjustable 10 – 100%; trip delay 0.1 – 25.0 s (E200 / E300). |
| Jam (overcurrent) | Trip setting adjustable 50 – 600% FLA with trip delay 0.1 – 25.0 s; separate warning adjustable 50 – 600% FLA. |
| Stall | Trip setting 100 – 600% FLA; enable time adjustable up to 250 s. |
| Underload (undercurrent) | Trip and warning settings 10 – 100% FLA; trip delay 0.1 – 25.0 s. Detects pump cavitation, tool breakage, belt breakage. |
| Voltage & power protection (E200 / E300) | Over/under voltage, voltage imbalance, over/under real power (kW), reactive (kVAR), apparent (kVA), and power-factor monitoring. |
| PTC thermistor input | Monitors motor-winding PTC thermistors via control module (E1 Plus / E200 / E300). |
| Thermal memory | Thermal model maintained at all times (even with supply power removed) for Trip Class 20 setting. |
Electrical
| Current ranges | 0.5 – 30 A, 6 – 60 A, 10 – 100 A, 20 – 200 A sensing modules (direct). Via external CT kits: 300 A, 400 A (CE), 600 A (UL); higher ratios (up to ~800 A) via Bulletin 1411 CTs. |
|---|---|
| Bimetallic ranges | 193-K: 0.1 – 12.5 A (adjustment ratio 1.5:1). 193-T1: 0.1 – 90 A across T1A/T1B/T1C/T1D frames. |
| Rated isolation voltage (Ui) | 690 V AC (main circuits, 193-K and 193-T1). |
| Rated impulse withstand (Uimp) | 6 kV main circuits; 4 kV auxiliary/control circuits. |
| Rated operating voltage (Ue) | 690 V AC (IEC) / 600 V AC (UL, CSA); DC operation to 440 V. |
| Rated frequency | 50 / 60 Hz (operational frequency DC…400 Hz on 193-T1). |
| Short-circuit withstand (main) | 6 A gL/gG fuse coordination; 4 kA prospective with ≤1 kA circuit breaker (193-T1). |
| Auxiliary contact rating | A600 / Q300 (UL); AC-15 4 A @ 24 V to 0.15 A @ 690 V; DC-13 2 A @ 24 V to 0.08 A @ 440 V. |
| Control voltage (E300 / E200 control modules) | 110…120 V AC 50/60 Hz, 220…240 V AC 50/60 Hz, or 24 V DC. |
| Motor starter modes | 54 operating modes — overload, non-reversing, reversing, Wye/Delta (Star/Delta), two-speed, and monitoring device. |
| Phase configuration | Three-phase and single-phase applications; straight-through wiring in both cases. |
Configuration & Communications
| Bimetallic (193-K, 193-T1) | Dial-set adjustment, fixed Class 10 trip, automatic or manual reset, N.C. trip + N.O. alarm contacts. VFD-compatible. |
|---|---|
| E1 Plus (standalone electronic) | Solid-state; configurable via DIP switches and dials. Optional expansion adapter adds EtherNet/IP or DeviceNet for integration. |
| E200 (Parameter Configuration Module) | Stand-alone non-networked electronic overload. Configured via Connected Components Workbench over a single USB Type B port. Three rotary dials set the FLA; 8-position DIP switch selects trip class and features. |
| E3 Plus / E300 (communicating) | Modular three-part design — sensing module + control module + communication module. Supports DeviceLogix onboard logic, trip/warning diagnostics, and integration with Logix controllers. |
| Communication module options | EtherNet/IP (193-ECM-ETR, dual-port RJ45 with embedded web server, SMTP email/text trip notifications, EDS file, Studio 5000 Add-On Profile); DeviceNet (193-ECM-DNT, 5-pin, 125 / 250 / 500 kb, 16 bytes I/O); Parameter Configuration Module (193-ECM-PCM, E200 non-networked). |
| Expansion bus | Up to four digital I/O modules (4 inputs / 2 relay outputs, 24 V DC / 120 V AC / 240 V AC) and up to four analog modules (3 universal analog inputs / 1 analog output — 0…10 V, 0…5 V, 1…5 V, 0…20 mA, 4…20 mA, RTD 2-wire/3-wire, 0…150 Ω, 0…750 Ω, 0…3000 Ω, 0…6000 Ω PTC/NTC). |
| Operator station | One optional control or diagnostic station per expansion bus, supporting CopyCat upload/download of configuration. |
| Reset modes | Manual or automatic; reset point adjustable 1 – 100% of thermal capacity utilization (TCU) on electronic relays. |
| Local programming | E1 Plus via EtherNet/IP or DeviceNet; E200 via USB Type B; E300 via EtherNet/IP or DeviceNet. |
Environmental & Mechanical
| Operating temperature | -20 to +60 °C (-4 to +140 °F). |
|---|---|
| Storage temperature | -55 to +80 °C (-67 to +176 °F). |
| Humidity | 5 – 95% relative, non-condensing (per IEC/EN 60068-2-3 and 60068-2-30). |
| Vibration | 3 g per IEC/EN 60068-2-6; class B per IEC/EN 61373 (railway). |
| Shock | 30 g per IEC/EN 60068-2-27; 11 ms > 5 g all axes (service). |
| Maximum altitude | 2000 m. |
| Pollution degree | 3. |
| Ingress protection | IP2X (with wires connected). |
| Approximate weight (bimetallic) | 193-K: 0.115 kg. 193-T1A/B: 0.115 – 0.155 kg. 193-T1C: 0.330 kg. 193-T1D: 0.360 kg. 193-T1…P: 0.415 kg. |
| Power dissipation (bimetallic) | 7 W up to 0.4 A; 6 W at 0.5 – 12.5 A / 0.5 – 36 A; 12 W at 25 – 47 A; 18 W at 47 – 90 A. |
Catalog Number Format
How to read an Allen-Bradley 193 catalog number. Each position encodes a specific configuration attribute.
Position
Meaning
Example
193
Bulletin number — 193 = IEC overload relay. (592 = equivalent NEMA overload relay.)
193
-ESM / -EIO / -ECM / -EXP / -EOS / -CT / -K / -T1
Module type — ESM = sensing module, EIO = I/O (control) module, ECM = communication module, EXP = expansion (DIO, AIO, PS), EOS = operator station, CT = external current transformer, K/T1 = bimetallic relay family.
-ESM
Sensing / feature code
For ESM: VIG (current + ground fault + voltage + power), IG (current + ground fault), I (current only). For ECM: ETR (EtherNet/IP), DNT (DeviceNet), PCM (Parameter Configuration / E200). For CT: UL or CE certification.
VIG
Current range / current ratio
Sensing-module range: 30A (0.5 – 30 A), 60A (6 – 60 A), 100A (10 – 100 A), 200A (20 – 200 A). External CT ratio: 300 (300:5 A), 400 (400:5 A), 600 (600:5 A).
30A
Mounting / suffix
Sensing-module mounting — C23/C55/C97/D180/E146/E205 (Bulletin 100 IEC contactor direct-mount), S2/S3/S4 (Bulletin 500 NEMA sizes 0…4), E3T (DIN/panel replacing 193-ECPM_), T (DIN/panel with power terminals), P (DIN/panel pass-thru), CT (DIN/panel pass-thru with voltage sensing). Bimetallic: A/B/C/D frame + R (remote reset) or P option.
-C23
Communication Protocols
Supported industrial networks and field buses for the products covered by this publication.
EtherNet/IP 193-ECM-ETR dual-port RJ45 (star, linear, ring DLR). 2 concurrent Class 1 connections + 6 Class 3 explicit-messaging connections. Embedded web server, SMTP trip/warning email + text notifications, embedded EDS file, Studio 5000 Add-On Profile.
DeviceNet 193-ECM-DNT 5-pin DeviceNet connector. Supports 125 kb, 250 kb, 500 kb. 16 bytes I/O (implicit) messaging to a DeviceNet scanner. Mechanical node-address selection. E3 Plus emulation mode with Series B control module (ADR, 193-DNCT / CEP7-DNCT, RSNetWorx for DeviceNet).
Parameter Configuration / USB (E200) 193-ECM-PCM Type B USB for non-networked stand-alone configuration via Connected Components Workbench. Three rotary dials for FLA; 8-position DIP for trip class + feature selection.
EtherNet/IP (E1 Plus) Optional expansion adapter adds EtherNet/IP networked configuration to the standalone E1 Plus.
DeviceNet (E1 Plus) Optional expansion adapter adds DeviceNet networked configuration to the standalone E1 Plus.
Certifications & Compliance
UL 508 Listed (bimetallic 193-K, 193-T1 — File E33916, Guide NKCR / NKCR7)
UL 1053 evaluated for Ground-Fault Sensing and Relaying Equipment (E1 Plus / E3 Plus / E200 / E300)
cULus Listed / CSA C22.2 No. 14
CE Marked per IEC/EN 60947-1, -4-1, -5-1
IEC/EN 60947-4-1 compliant
RoHS compliant
Document Contents
Full PDF covers the following topics in detail:
- Catalog-number explanation for every module in the Bulletin 193 electronic overload platform: sensing (ESM), control (EIO / EIOGP), communication (ECM-ETR / DNT / PCM), digital and analog expansion (EXP-DIO / AIO), expansion power supply, operator stations, and external current transformers.
- Sensing-module selection tables by current range (0.5 – 30 A, 6 – 60 A, 10 – 100 A, 20 – 200 A) and mounting style — direct-mount to Bulletin 100 IEC contactors (C23 through E205), Bulletin 500 NEMA contactors (S2 / S3 / S4), Bulletin 300 NEMA contactors, or DIN-rail / panel mount (T, E3T, P, CT).
- Protection-function specifications and trip-setting ranges for overload, phase loss, ground fault, current imbalance, jam, stall, underload, and (on E200/E300) voltage and power.
- Electrical ratings: rated isolation voltage (690 V), impulse withstand (6 kV main / 4 kV auxiliary), operating voltage (690 V IEC / 600 V UL), contact ratings (A600/Q300, AC-15, DC-13), and short-circuit withstand.
- Environmental ratings: operating/storage temperature, humidity, vibration (3 g), shock (30 g), altitude (2000 m), pollution degree 3, IP2X.
- Communication-module specifications for EtherNet/IP (dual-port, embedded web server, SMTP, EDS), DeviceNet (16-byte I/O, 125/250/500 kb), and the E200 Parameter Configuration Module (USB).
- External current-transformer options for motor-overload applications above 200 A (193-CT-UL-300A / 600A, 193-CT-CE-300A / 400A), plus compatibility with Bulletin 1411 CTs.
- Bimetallic 193-K (0.1 – 12.5 A) and 193-T1 (0.1 – 90 A) specifications, including main/control-circuit ratings, remote-reset option (193-T1R), terminal torque specs, and approximate dimensions.
- Reset-mode options (manual / automatic with adjustable reset point 1 – 100% TCU), thermal-memory behavior, and thermal-warning thresholds.
- Accessory compatibility: Bulletin 100 / 300 / 500 contactors, DeviceLogix onboard logic, Connected Components Workbench, Studio 5000 Add-On Profile.
In-Stock Products Covered by This Document
Every product below is in stock at our Charlotte, NC warehouse and covered by this publication. Ships same-day (orders before 4 PM ET) with 2.5-year warranty included.
Frequently Asked Questions
What's the difference between a 193 E1 Plus and an E3 Plus (or E200 / E300)?
The E1 Plus is a standalone solid-state overload relay — dial-set FLA, DIP-switch trip class, with optional EtherNet/IP or DeviceNet via an add-on expansion adapter. The E3 Plus (and its successors E200 and E300) is a modular three-part assembly: sensing module + control module + communication module. E3 Plus / E300 include DeviceLogix onboard logic, full diagnostics (% FLA, % thermal-capacity utilization, voltage, power, energy), and networked configuration as standard. The E200 is the non-networked variant configured via USB with the Parameter Configuration Module (193-ECM-PCM). See Publication 193-TD011 for E1 Plus detail and 193-TD006 for E300 / E200 detail.
When should I upgrade from a bimetallic 193-K / 193-T1 to a communicating overload relay?
Bimetallic relays (193-K, 193-T1) are fixed Class 10, dial-set, and have only trip + alarm dry contacts. Upgrade to an E1 Plus or E3 Plus when you need adjustable trip class (5…30), ground-fault protection, remote reset, thermal-memory retention, or diagnostic data (% FLA, % TCU, imbalance, ground-fault current) over EtherNet/IP or DeviceNet. Upgrade to E200 / E300 when you additionally need voltage, power, and energy monitoring or DeviceLogix onboard logic.
How do I size an external CT for motor currents above 200 A?
The largest direct-sensing module is 193-ESM-_-200A (20 – 200 A). Above 200 A, use the 193-CT external CT kits: 193-CT-UL-300A or 193-CT-UL-600A (UL compliant), or 193-CT-CE-300A / 193-CT-CE-400A (CE compliant). The CTs step the primary current down to a 5 A secondary into the sensing module. You can also use Bulletin 1411 current transformers for other ratios — see Publication 1411-TD001. The CT also provides isolation between the high-current conductor and the overload relay.
How is ground-fault protection integrated on the Bulletin 193 E-series relays?
The E1 Plus / E3 Plus / E200 / E300 incorporate zero-sequence (core-balance) sensing for low-level (arcing) ground-fault detection directly in the sensing module, with trip and warning settings from 20 mA to 5.0 A. Two cases require an external core-balance CT (193-CBCT_): devices rated greater than 200 A, and applications needing detection below 0.5 A. The product is evaluated to UL 1053 (Ground-Fault Sensing and Relaying Equipment); it is NOT a personnel-protection Ground-Fault Circuit Interrupter (Class I) per NEC Article 100.
Are Bulletin 193 overload relays compatible with PowerFlex drives and VFDs?
Yes. The 193-K and 193-T1 bimetallic relays are explicitly VFD-compatible per their datasheet. For applications on PowerFlex drives (Bulletin 22, 25, or 20-series), thermal-overload protection is normally handled inside the drive itself; the external Bulletin 193 relay is still used on the line side for branch-circuit overload coordination, for bypass contactors, or when the drive feeds a contactor-switched load that the drive's electronic thermal model can't track accurately.
What trip classes does the Bulletin 193 family support?
Bimetallic 193-K and 193-T1 are fixed Class 10 (IEC 10A / UL 10). The electronic relays (E1 Plus, E3 Plus, E200, E300) are adjustable Class 5 through Class 30 — programmed via DIP switch (E1 Plus / E200) or over the network / USB (E200 / E300). Class selection is how you match the relay's time-current curve to the motor's service factor, acceleration time, and duty cycle.
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