Product Description
Eaton H2008B-3 Heater Pack — 3.23–5.23A, Class 20, Freedom Series
The Eaton H2008B-3 is a Class 20 standard trip heater pack for Eaton Freedom Series and Definite Purpose NEMA overload relays. Sold as a pack of 3 bimetallic heater elements, the H2008B-3 covers a full-load amp (FLA) range of 3.23A to 5.23A across four adjustable dial positions. Compatible with Eaton Freedom Series 32A and 75A overload relays for NEMA starter sizes 00 through 2. Also sold under the Cutler-Hammer brand name. For motors with FLA below 3.23A, see the H2007B-3 (2.15–3.49A). For motors with FLA above 5.23A, see the H2009B-3 (4.55–7.4A).
Quick Specifications
- FLA Range: 3.23A – 5.23A
- Trip Class: Class 20 (Standard Trip)
- Sensing Method: Bimetallic
- Package Quantity: 3 heater elements per pack
- Compatible Overload Relays: Freedom Series 32A and 75A overload relays
- NEMA Sizes: 00 through 2 (Series B and C starters)
- Approvals: UL Listed, CSA Certified
Dial Position & Full-Load Amp Settings
| Dial Position | Full-Load Amps (FLA) | Typical Motor Application |
|---|---|---|
| A | 3.23A | ~1 HP @ 460V / fractional HP @ 230V |
| B | 3.9A | ~1 HP @ 460V / ~1 HP @ 230V |
| C | 4.56A | ~1.5 HP @ 460V / ~1 HP @ 230V |
| D | 5.23A | ~1.5 HP @ 460V / ~1.5 HP @ 230V |
Compatible Overload Relays & Starter Sizes
| Overload Relay Rating | Starter Series | NEMA Sizes | IEC Sizes |
|---|---|---|---|
| 32A or 75A | Freedom Series C | 00 – 0 | A – F |
| 32A or 75A | Freedom Series B | 1 – 2 | G – K |
| 32A or 75A | Definite Purpose Series | Compatible sizes | — |
Adjacent Heater Pack Range
| Part Number | FLA Range | Dial Positions (A/B/C/D) |
|---|---|---|
| H2007B-3 | 2.15A – 3.49A | 2.15 / 2.6 / 3.04 / 3.49 |
| H2008B-3 (this item) | 3.23A – 5.23A | 3.23 / 3.9 / 4.56 / 5.23 |
| H2009B-3 | 4.55A – 7.4A | 4.55 / 5.5 / 6.45 / 7.4 |
| H2010B-3 | 6.75A – 11.0A | 6.75 / 8.17 / 9.58 / 11.0 |
| H2011B-3 | 9.14A – 14.0A | 9.14 / 10.8 / 12.4 / 14.0 |
| H2012B-3 | 14.0A – 22.8A | 14.0 / 16.9 / 19.9 / 22.8 |
Product Features
- Pack of 3 Heater Elements: Sold as a set of 3 bimetallic heater elements — one per phase — sufficient for a complete 3-phase motor starter installation.
- Four Adjustable Dial Positions: One pack covers four FLA settings (3.23A, 3.9A, 4.56A, 5.23A) via the adjustment dial on the overload relay. Match the dial position to the motor’s nameplate FLA for precise thermal protection.
- Class 20 Standard Trip: Class 20 trip characteristic is appropriate for general-purpose motor applications including pumps, fans, compressors, and conveyors with normal starting duty.
- Bimetallic Sensing: Uses bimetallic strip technology to detect motor overload conditions through heat generated by excess current, providing reliable and repeatable thermal protection without solid-state components.
- Series B Heater Design: The H2008B-3 is a Series B heater pack. Load lugs are built into the overload relay base rather than the heater pack itself. If replacing older Series A heater packs in a Series A1 overload relay, lug adapter kit C3606KAL1-3B is required as a one-time addition. Most relays currently in service are Series B or later and require no adapter. Call us at 1-800-222-5129 if you are unsure which series your relay uses.
- Also Known as Cutler-Hammer H2008B-3: Sold under both the Eaton and Cutler-Hammer brand names. Both refer to the exact same heater pack.
- UL Listed & CSA Certified: Approved for use in compliant motor starter installations in the US and Canada.
Stock Item – Order before 4:00 PM EST for Same-Day Shipping.
Frequently Asked Questions
How do I select the correct dial position for my motor?
Find the motor’s full-load amperage (FLA) on the motor nameplate. Match it to the closest dial position on the H2008B-3: Position A = 3.23A, B = 3.9A, C = 4.56A, D = 5.23A. If your motor’s FLA is below 3.23A, the H2007B-3 (2.15–3.49A) is the correct heater. If above 5.23A, use the H2009B-3 (4.55–7.4A). Call us at 1-800-222-5129 for selection assistance.
What is the overlap between H2007B-3, H2008B-3, and H2009B-3?
Adjacent heater packs in the Freedom Series share overlapping FLA ranges by design. The H2007B-3 tops out at 3.49A (position D) and the H2008B-3 starts at 3.23A (position A) — meaning motors with FLA between 3.23A and 3.49A could use either pack. Similarly, the H2008B-3 tops out at 5.23A (position D) and the H2009B-3 starts at 4.55A (position A), giving an overlap between 4.55A and 5.23A. In any overlap range, select the pack whose dial position most closely matches your motor’s exact nameplate FLA.
Can I replace a Series A heater pack with the H2008B-3 (Series B)?
The H2008B-3 is a Series B heater pack (identified by the “B” in the catalog number). Series B packs are electrically equivalent to earlier Series A packs but the load lugs are located on the overload relay base rather than on the heater pack. If your overload relay is a Series A1 relay, a one-time Lug Adapter Kit C3606KAL1-3B must be added before installing Series B heaters. Most relays currently in service are Series B or later and are already compatible. If you are unsure, call us at 1-800-222-5129 with your relay’s catalog number.
Is Cutler-Hammer H2008B-3 the same as Eaton H2008B-3?
Yes — Cutler-Hammer is a legacy brand acquired by Eaton. The H2008B-3 is sold under both names and refers to the exact same heater pack. If your documentation references “Cutler-Hammer H2008B-3”, the Eaton H2008B-3 here is the correct replacement.
How many heater elements are included in the H2008B-3 package?
The H2008B-3 contains 3 bimetallic heater elements per pack — one for each phase of a standard 3-phase motor starter. The “-3” suffix indicates a pack of 3. One pack is sufficient for a single complete motor starter installation.
Is the H2008B-3 in stock for same-day shipping?
Yes — the H2008B-3 is a stocked item at Kent Electrical Supply’s warehouse in Emmaus, PA. Orders placed before 4:00 PM EST ship the same business day. Current stock quantity is shown on this page. For bulk pricing on multiple packs, call us at 1-800-222-5129 or text your RFQ to 484-425-0652.
